8" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum Actual Filter Size – 7

Actual Filter Size – 7 3/4"w x 5 3/4" x 1"

if your hole is 20" wide by 14" tall

+ Product Details Size – 14"w X 6"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 36"h is the size for the duct opening measurement only

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8" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum Actual Filter Size – 7+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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