Airtec 1'x1' Black Plastic Antique Diffuser w/Damper 6,7,8" collar MVAB, produced by Rectorseal, Airtec brand, unique plastic ceiling diffuser which incorporates an integral ceiling box. Intended for residential and light commercial applications, these products are actually 11-1/4" x 11-1/4” square. They provide maximum convenience and time-saving as they are designed for easy installation by one man only working from below the ceiling. Included is a built-in Air Damper to restrict airflow when desired. Zip Tie Included. Used for a 6",7" or 8" duct. MPN: 81918
Actual Outside measurements of the faceplate are 11.25"x 11.25".