20" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum +Product Details Size – 2"h

+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

Actual Filter Size – 15 3/4"w x 33 3/4" x 1"

+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only

20" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum +Product Details Size – 2"h+ Product Details Size 20"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 6" 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