BUILDMART - 14x6 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: 254 ft3 min Effective Velocity: 9. 8 ft s Neck: 13 3 4" x 5 15 16"" Face: 15 9 16" x 7 5 8" This is a Non Filter

Mouth Dimensions: L: 11 7/8" W: 4 3/4"

CFM: 812 ft3/min - Effective Velocity 9

20 x 8 20x8 8x20 8 x 20

Neck: 17 3/4" x 5 3/4" - Face: 19 15/16" x 7 15/16"

16 x 12 16x12 12x16 12 x 16

CFM: 301 ft3/min - Effective Velocity: 9

Entry size: 2 entries of 8" flex in oval shape

Neck: 47 1/4" x 1 5/8" - Face: 48 3/4" x 3 1/16"

Neck: 29 5/8" x 13 11/16" - Face: 31 1/2" x 15 11/16"

18 x 6 18x6 6x18 6 x 18

Neck: 19 3/4" x 3 15/16" - Face: 21 5/8" x 5 15/16"

ASIN: B09GJMZ5P8