8" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum if your hole is 20"

if your hole is 20" wide by 14" tall

Actual Filter Size – 33 3/4"w x 9 3/4" x 1"

background: #5296DD

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

actual front end outer dimensions are approximately 28 5/8" width X 30 5/8" height

8" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Anodized Aluminum if your hole is 20"+ 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