BUILDMART - 20x20 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: 538 ft3 min Effective Velocity: 9. 8 ft s Neck: 19 5 8" x 19 1 2" Face: 21 5 8" x 21 1 2" This is a Non Filter

Neck: 23 3/4" x 1 5/8" - Face: 25 1/16" x 3 1/16"

Grilles & Vents - Home Decor & Wall Decor for Amazon Home

30 x 16 30x16 16x30 16 x 30

ASIN: B085VXGC14

Neck: 19 5/8" x 13 5/8" - Face: 21 5/8" x 15 5/8"

CFM: 593 ft3/min - Effective Velocity: 9

adding any type of weight is not recommended

ASIN: B09WTK19CV

ASIN: B09GPVG6NJ

24 x 4 24x4 4x24 4 x 24

Entry size: 6" flex in oval shape

12'' X 1 3/4" Linear Slot Plenum Box - For Single Slot (1 Slot) Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings