20" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling d + Product Details Size -

+ Product Details Size - 22"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 16"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 26"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 4"w X 12"h is the size for the duct opening measurement only

20" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling d + Product Details Size -+ Product Details Size 20"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 10" 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