BUILDMART - 14x12 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: 302 ft3 min Effective Velocity: 9. 8 ft s Neck: 13 3 4" x 11 3 4" Face: 15 3 4" x 13 3 4" This is a Non Filter

20 x 16 20x16 16x20 16 x 20

This black linear air vent register can be used as a supply air vent cover for ceilings

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

Neck: 9 7/8" x 5 15/16"- Face: 11 11/16" x 7 5/8"

ASIN: B09WTJXNH2

ASIN: B085WJ25J4

CFM: 293 ft3/min - Effective Velocity: 9

20 x 10 20x10 10x20 10 x 20

This register is not only a vent cover

Ideal for Texas Buildmart 12" Lineal Slot Diffuser - 1 Slot

Neck: 35 3/8" x 15 9/16" - Face: 37 3/8" x 17 5/8"

CFM: 138 ft3/min - Effective Velocity: 9