36" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Black The first number in a

The first number in a grille size

875" width X 9

+ Product Details Size - 32"w X 8"h is the size for the duct opening measurement only

and Diffusers

36" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_Black The first number in a+ Product Details Size 36"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 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