BUILDMART - 30x18 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: 678 ft3 min Effective Velocity: 9. 8 ft s Neck: 29 1 2" x 17 9 16" Face: 31 1 2" x 19 9 16" This is a Non Filter

Neck: 70 15/16" x 1 5/8" - Face: 72 5/16" x 3 1/8"

48" Linear Slot Diffuser - 3 Slot - Triple Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings

CFM: 285 ft3/min - Effective Velocity: 9

Walls & Floors - Commercial Grade HVAC Registers

ASIN: B09WTKKLDX

and Floors

Neck: 13 5/8" x 13 3/8" - Face: 15 3/4" x 15 5/8"

CFM: 411 ft3/min - Effective Velocity: 9

and sanded

This register is not only a vent cover

This vent can be used as a return air vent cover as well

18 x 8 18x8 8x18 8 x 18