38X4 CRYPTIC - 4" Linear Slot Diffuser - 2 Slot - Modern Air Vent Cover for Ceiling, Wall or Floor

The Cryptic Air 38x4 linear slot diffuser is a 2-slot vent measuring 38 inches long by 4 inches wide, rated at 319 CFM. It is made in the USA and sold factory-direct, and it installs in ceilings, walls and floors in both residential and commercial spaces.

• Factory-direct pricing. Built in our US facility, sold directly. No distributor markup.
• Custom sizing at no extra charge. Send your dimensions, we'll match them exactly.
• Fast shipping. 2-5 days from US warehouses on stock sizes, 4-8 days on custom.
• Silent air control. Internal airflow wings reduce noise while distributing air evenly.
• Easy installation. Sized to replace standard vent covers without wall modifications.
• Premium materials. High-grade aluminum, factory-painted with advanced coatings for long-term durability.

Need 38 inches in a different width, or a length 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.

• 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.