10" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18" Round Duct Pipe + Product Details Size -

+ Product Details Size - The listed 8" diameter refers specifically to the size of the duct opening

These are airflow control components made to connect to supply grilles of the drop ceiling

+ Product Details Size - 10"w X 24"h is the size for the duct opening measurement only

16" x 3" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

Installation Location – Sidewall or ceiling

10" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18" Round Duct Pipe + Product Details Size -+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 875" width X 12" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable airflow