BUILDMART - 18x12 MUD-IN Air Vent Cover - Drywall Mud-in White Air Vent - Mud Linear Slot Diffuser - Register Grille for Ceiling and Walls - Texas BuildmartOur Standard Linear Slot Diffusers have ASHRAE 70 and ANSI S12. 51 Engineering Certifications Designed and Engineered to the Highest HVAC Industry Standards Commercial Grade Solid Aluminum with Modern Architectural Design This Model can be used in Ceilings and Walls This Model can be used as a Supply Vent Cover and Return Vent Cover CFM: 328 ft3 min Effective Velocity: 9. 8 ft s Neck: 17 3 4" x 11 3 4" Face: 19 3 4" x 13 3 4" This is a Non Filter

Texas Buildmart offers Mud In Air Vent Covers also known as Drywall Mud-in White Air Vents

16 x 8 16x8 8x16 8 x 16

Neck: 35 1/2" x 5 15/16" - Face: 37 3/8" x 7 7/8"

20 x 8 20x8 8x20 8 x 20

CFM: 277 ft3/min - Effective Velocity: 9

Neck: 19 5/8" x 13 5/8" - Face: 21 5/8" x 15 5/8"

ASIN: B085WJ25J4

Ideal for Texas Buildmart 48" Lineal Slot Diffuser - 3 Slot

This register is not only a vent cover

20 x 10 20x10 10x20 10 x 20

CFM: 595 ft3/min - Effective Velocity: 9

CFM: 445 ft3/min - Effective Velocity: 9