BUILDMART - 36x14 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: 595 ft3 min Effective Velocity: 9. 8 ft s Neck: 35 3 8" x 13 1 4" Face: 37 3 8" x 15 5 8" This is a Non Filter

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

CFM 657 ft3/min - Effective Velocity 9

ASIN: B09WTKKLDX

Entry size: 2 entries of 10" flex in oval shape

Neck: 21 5/8" x 15 5/8" - Face: 23 5/8" x 17 5/8"

CFM: 293 ft3/min - Effective Velocity: 9

CFM: 486 ft3/min - Effective Velocity: 9

Neck: 11 9/16" x 11 7/16" - Face: 13 13/16" x 13 5/8"

CFM 302 ft3/min - Effective Velocity 9

Mouth Dimensions: L: 23 13/16" W: 1 11/16"

CFM: 233 ft3/min - Effective Velocity: 9

CFM 812 ft3/min - Effective Velocity 9