BUILDMART - 14x4 Black Modern AC Vent Cover - Decorative Aluminum Air Vent - Standard Linear Slot Diffuser - Heating and Cooling Register Grille for Ceiling, Walls & Floors - Texas BuildmartThe Performance of This Buildmart Diffuser Was Verified Through Testing According to ASHRAE 70 and ANSI S12. 51 ISO 3741 Standard by AIRFLOW SCIENCES CORPORATION Submittals Available Upon Email Request 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

This is a Non-Filter Model

CFM: 272 ft3/min - Effective Velocity: 9

Neck: 23 5/8" x 15 9/16" - Face: 25 5/8" x 17 5/8"

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

Neck: 23 9/16" x 11 3/4" - Face: 25 9/16" x 13 3/4"

CFM 93 ft3/min - Effective Velocity 9

ASIN: B09WV1RCWP

30 x 24 30x24 24x30 24 x 30

Here's a link to the Plenum Box that fits this Diffuser:

ASIN: B09GJ46L13

36 x 16 36x16 16x36 16 x 30

25 x 6 25x6 6x25 6 x 25