24" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_White these heavy-duty louvers are ideal

these heavy-duty louvers are ideal for use in attics

+ Product Details Size - 6"w X 6"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 28"h is the size for the duct opening measurement only

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

24" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_White these heavy-duty louvers are ideal+ Product Details Size 24"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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