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

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 9 3/4" x 1"

+ Product Details Size – 12"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 28"h is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 25 3/4" x 1"

30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return + 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