8"w x 8"h 2-Way AIR Supply Diffuser - Vent Duct Cover - Grille Register - Sidewall or Ceiling - High Airflow - White 10in diameter + Product Details Size –

+ Product Details Size – 12"w X 12"h

Actual Filter Size – 11 3/4"w x 21 3/4" x 1"

+ Product Details Size - 18"w X 24"h X 2"d (for duct opening measurement only)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 20" duct openings

8"w x 8"h 2-Way AIR Supply Diffuser - Vent Duct Cover - Grille Register - Sidewall or Ceiling - High Airflow - White 10in diameter + Product Details Size –+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 9. 75" height. High Quality High grade steel construction with easy unrestricted air flow for your HVAC system. Installation Location Sidewall & ceiling. Design Multi shutter damper with handle lever for easy opening and closing screws included. Powder Coat Finish Smooth, shiny, scratch resistant, with