84x6 R6 Insulated Plenum Box - 3-Slot - Fiberglass HVAC Plenum | Cryptic Air

The Cryptic Air 84x6 R6 insulated plenum box measures 84 inches long by 6 inches wide and is built to pair with the 3-slot linear slot diffuser. R6 fiberglass duct board controls condensation, lowers noise, and keeps the run efficient. Cut a duct collar in any size, anywhere on the box.

• Matched to your diffuser. Sized based on your diffuser order, no guesswork at install.
• Flexible duct connection. Cut and install a collar in any size, anywhere on the box.
• Optimized airflow. Maintains proper pressure and even air distribution.
• Quiet operation. Insulated interior reduces turbulence and lowers noise.
• Condensation control. R6 fiberglass reduces sweating and temperature transfer.
• Clean professional install. Front metal lip for secure drywall connection.

Pairs with any Cryptic Air 3-slot diffuser at 84 inches. Need a size we do not stock? Custom sizing is included at no extra charge. Send your dimensions and our HVAC team will match them exactly, or call 786-629-9699.

Note: Fiberglass material. Use gloves, mask, and proper protection when handling or cutting. May cause skin or respiratory irritation.

• All orders are typically processed and shipped within 4-8 business days from the date of purchase.
• Please note that orders placed on weekends or holidays may be processed on the next business day.