BUILDMART - 18" White Linear Slot Diffuser - 3 Slot - Triple Slot - Decorative Aluminum Air Vent - Heating and Cooling Modern AC Vent Cover for Ceiling, Walls & FloorsOur Linear Slot Diffusers have ANSI S12. 51 and ASHRAE 70 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, Walls, and Floors This Model can be used as a Supply Vent Cover and Return Vent Cover CFM 246 ft3 min Effective Velocity 9. 8 ft s Neck: 17 13 16" x 4 11 16" Face: 19 1 4" x 6 1 8" 3 Slot Triple Slot 3 4"

Ideal for Texas Buildmart 72" Lineal Slot Diffuser - 2 Slot

ASIN: B091RMSB1G

18 x 4 18x4 4x18 4 x 18

Neck: 15 3/4" x 3 7/8" - Face: 17 15/16" x 5 15/16"

Neck: 13 13/16" x 9 9/16" - Face: 15 15/16" x 11 3/4"

ASIN: B09GPYGTLB

Neck: 29 9/16" x 11 3/4" - Face: 31 1/2" x 13 3/4"

ASIN: B09GJCN2FH

22 x 16 22x16 16x22 16 x 22

adding any type of weight is not recommended

Neck: 13 3/4" x 5 15/16" - Face: 15 9/16" x 7 5/8"

ASIN: B08946N46C