+ Product Details Size - 6"w X 20"h is the size for the duct opening measurement only
+ Product Details Size - 10"w X 32"h is the size for the duct opening measurement only
actual front end outer dimensions are approximately 14 5/8" width X 10 5/8" height
actual front end outer dimensions are approximately 20 5/8" width X 34 5/8" height
+ Product Details Size - 26"w X 18"h is the size for the duct opening measurement only
16" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Red Oak Wood + Product Details Size -+ Product Details Size 16"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 10" 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