12" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Filter Grille 10"w X 4"h Is The

10"w X 4"h Is The Size For The Duct Opening Measurement Only

32"w X 8"h Is The Size For The Duct Opening Measurement Only

actual front end outer dimensions are approximately 20 5/8" width X 32 5/8" height

actual front end outer dimensions are 15

12" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Filter Grille 10"w X 4"h Is The+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 10" 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