14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w18h18 + Product Details Size -

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height -

actual front end outer dimensions are approximately 14 5/8" width X 32 5/8" height

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

+ Product Details Size – 8"w X 30"h is the size for the duct opening measurement only

14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w18h18 + Product Details Size -+ Product Details Size 14"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 875" width X 6" 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