20" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Supply Grille + Product Details Size -

+ Product Details Size - 8"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 8"w X 28"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 30 5/8" height

+ Product Details Size – 34"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 18"h is the size for the duct opening measurement only

20" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Supply Grille + Product Details Size -+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 8" 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