12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w34h34 + Product Details Size -

+ Product Details Size - 4"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 12" x 24" or 24" x 12" is the size for the duct opening measurement only

and yet lightweight and easy to handle

installation is a breeze

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

12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w34h34 + Product Details Size -+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 14" 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