BUILDMART - 18" Black Linear Slot Diffuser - 1 Slot - Single Slot - Decorative Aluminum Air Vent - Heating and Cooling Modern AC Vent Cover for Ceiling, Walls & Floors - Texas BuildmartOur 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 129 ft3 min Effective Velocity 9. 8 ft s Neck: 17 3 4" x 1 5 8" Face: 19 1 8" x 3 1 16" 1 Slot Single Slot 3 4" Slot

ASIN: B0821Q6SDV

ASIN: B09JBNKZM2

48" Linear Slot Diffuser - 2 Slot - Double Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings

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

CFM 129 ft3/min - Effective Velocity 9

51 and ASHRAE 70 Engineering Certifications

Neck: 17 3/4" x 9 7/8" - Face: 19 3/4" x 11 7/8"

Total Box Dimensions: L: 48 3/4" W: 4 3/4" H: 11 7/8"

30 x 20 30x20 20x30 20 x 30

ASIN: B09GJMZ5P8

ASIN: B07NF8LBBM

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