24" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper The total outer size of

The total outer size of this grille is the listed size plus 2

+ Product Details Size - 10"w X 12"h is the size for the duct opening measurement only

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

+ Product Details Size - 22"w X 4"h is the size for the duct opening measurement only

24" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper The total outer size of+ Product Details Size 24"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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