10" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Round Damper Ring Actual Filter Size – 9

Actual Filter Size – 9 3/4"w x 17 3/4" x 1"

+ Product Details Size – 25"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 30 5/8" height

+ Product Description Check out one of our most attractive and stylish grills

+ Product Details Size – 8"w X 28"h is the size for the duct opening measurement only

10" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Round Damper Ring Actual Filter Size – 9+ Product Details Size 10"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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