BUILDMART - 36x8 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: 420 ft3 min Effective Velocity: 9. 8 ft s Neck: 35 3 8" x 7 7 8" Face: 37 1 2" x 9 7 8" This is a Non Filter Model

Entry size: 10" flex in oval shape

CFM: 323 ft3/min - Effective Velocity: 9

ASIN: B09GJBSF8P

18 x 10 18x10 10x18 10 x 18

ASIN: B09GPWMZ48

24 x 14 24x14 14x24 14 x 24

CFM: 542 ft3/min - Effective Velocity 9

ASIN: B09GPWX1ZC

ASIN: B081ZMXZPZ

Total Box Dimensions: L: 48 1/2" W: 3" H: 12"

ASIN: B09K5YJ9MS

Neck: 23 3/4" x 23 3/8" - Face: 25 5/8" x 25 3/8"