10" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper + Product Details Size -

+ Product Details Size - 30"w X 20"h is the size for the duct opening measurement only

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

You may think of grilles and registers as a generic component of the ventilation system in your house

actual front end outer dimensions are 31

actual front end outer dimensions are 9

10" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper + Product Details Size -+ Product Details Size 10"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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