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 14 5/8" width X 36 5/8" height

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

+ 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