12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Brown + Product Details Size -

+ Product Details Size - 18"w X 24"h X 2"d (for duct opening measurement only)

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+ Product Details Size – 30"w X 28"h is the size for the duct opening measurement only

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

Actual Filter Size – 31 3/4"w x 13 3/4" x 1"

12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Brown + Product Details Size -+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 14" 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