{"title":"Plenum Boxes - Hvac Pro","description":null,"products":[{"product_id":"12x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"12x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"12x2","offer_id":52609029243167,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"18x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"18x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"18x2","offer_id":52609029767455,"sku":null,"price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"24x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"24x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"24x2","offer_id":52609030258975,"sku":null,"price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"36x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"36x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"36x2","offer_id":52609030783263,"sku":null,"price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"48x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"48x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"48x2","offer_id":52609031078175,"sku":null,"price":155.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"60x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"60x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"60x2","offer_id":52609031373087,"sku":null,"price":190.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"72x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"72x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"72x2","offer_id":52609031766303,"sku":null,"price":220.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"84x2-r6-insulated-plenum-box-1-slot-fiberglass-hvac-plenum-cryptic-air","title":"84x2 R6 Insulated Plenum Box - 1-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 1-Slot (Single-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 1-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a single-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 1-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"84x2","offer_id":52609032356127,"sku":null,"price":256.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"12x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"12x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"12x4","offer_id":52609033273631,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"18x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"18x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"18x4","offer_id":52609033928991,"sku":null,"price":80.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"24x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"24x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"24x4","offer_id":52609034518815,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"36x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"36x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"36x4","offer_id":52609035141407,"sku":null,"price":140.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"48x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"48x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"48x4","offer_id":52609035632927,"sku":null,"price":180.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"60x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"60x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"60x4","offer_id":52609036353823,"sku":null,"price":210.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"72x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"72x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"72x4","offer_id":52609037140255,"sku":null,"price":240.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"84x4-r6-insulated-plenum-box-2-slot-fiberglass-hvac-plenum-cryptic-air","title":"84x4 R6 Insulated Plenum Box - 2-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 2-Slot (Double-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 2-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a double-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 2-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"84x4","offer_id":52609038090527,"sku":null,"price":280.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"12x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"12x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"12x6","offer_id":52609038221599,"sku":null,"price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"18x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"18x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"18x6","offer_id":52609038745887,"sku":null,"price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"24x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"24x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"24x6","offer_id":52609039597855,"sku":null,"price":105.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"36x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"36x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"36x6","offer_id":52609041170719,"sku":null,"price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"48x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"48x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"48x6","offer_id":52609041662239,"sku":null,"price":190.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"60x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"60x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"60x6","offer_id":52609042317599,"sku":null,"price":215.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"},{"product_id":"72x6-r6-insulated-plenum-box-3-slot-fiberglass-hvac-plenum-cryptic-air","title":"72x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air","description":"\u003cp\u003e\u003cstrong\u003eR6 Insulated Plenum Box for 3-Slot (Triple-Slot) Linear Diffusers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCryptic Air plenum boxes are built to pair seamlessly with our 3-slot linear slot diffusers, delivering optimal airflow performance, quiet operation, and a precise fit while leaving you full flexibility on the job site.\u003c\/p\u003e\n\u003cp\u003eConstructed from R6 fiberglass duct board for excellent insulation, reduced condensation, lower noise, and improved system efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatched to your diffuser.\u003c\/strong\u003e Sized based on your diffuser order, no guesswork at install.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible duct connection.\u003c\/strong\u003e Cut and install a collar in any size, anywhere on the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized airflow.\u003c\/strong\u003e Maintains proper pressure and even air distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiet operation.\u003c\/strong\u003e Insulated interior reduces turbulence and lowers noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation control.\u003c\/strong\u003e R6 fiberglass reduces sweating and temperature transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean professional install.\u003c\/strong\u003e Front metal lip for secure drywall connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso called a triple-slot diffuser plenum, linear diffuser plenum box, or HVAC supply plenum. Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. 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Compatible with Cryptic Air 3-slot modern AC vent covers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.\u003c\/p\u003e","brand":"Cryptic Air","offers":[{"title":"84x6","offer_id":52609043398943,"sku":null,"price":303.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/files\/PlenumBox-Edited.png?v=1774302019"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/3658\/8831\/collections\/Untitled_design_87.png?v=1785139514","url":"https:\/\/www.cryptic-air.com\/collections\/plenum-boxes-hvac-pro.oembed","provider":"Cryptic Air","version":"1.0","type":"link"}