20" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Powder Coated actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 8 5/8" height -

actual front end outer dimensions are approximately 34 5/8" width X 30 5/8" height

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

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

Easy clean Healthy air flow for your HVAC system - noise free components

20" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Powder Coated actual front end outer dimensions+ Product Details Size 20"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 18" 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