30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Round Damper Ring + Product Details Size -

+ Product Details Size - 30"w X 12"h X 2"d (for duct opening measurement only)

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+ Product Details Size – 24"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Round Damper Ring + Product Details Size -+ Product Details Size 30"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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