20" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Material_Steel + Product Details Size -

+ Product Details Size - 20"w X 14"h is the size for the duct opening measurement only

The crank handle lever makes it easy to adjust to every weather situation

Our grilles feature a durable powder-coat finish

+ Product Details Size – 25"w X 14"h is the size for the duct opening measurement only

20" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Material_Steel + Product Details Size -+ 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