30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling ceiling Measure the size of the

Measure the size of the vent opening

Actual Filter Size – 25 3/4"w x 31 3/4" x 1"

actual front end outer dimensions are approximately 12 5/8" width X 28 5/8" height

+ Product Details Size – 16"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 24 5/8" width X 8 5/8" height

30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling ceiling Measure the size of the+ 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