BUILDMART - 25x20 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: 665 ft3 min Effective Velocity: 9. 8 ft s Neck: 24 9 16" x 19 1 2" Face: 26 9 16" x 21 1 2" This is a Non Filter

ASIN: B09WV3BPKM

3 Slot - Triple Slot - 3/4" Slot Width

20 x 8 20x8 8x20 8 x 20

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

Ideal for Texas Buildmart 48" Lineal Slot Diffuser - 1 Slot

16 x 4 16x4 4x16 4 x 16

ASIN: B085WCN9WC

Total Box Dimensions: L: 13 3/16" W: 2 7/8" H: 11 7/8"

20 x 6 20x6 6x20 6 x 20

ASIN: B09GPWMZ48

6 x 4 6x4 4x6 4 x 6

ASIN: B09JB8C717