16" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling RV Mobile Home + Product Details Size -

+ Product Details Size - 4"w X 10"h is the size for the duct opening measurement only

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

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

Its durability and performance contribute to overall comfort

16" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling RV Mobile Home + Product Details Size -+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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