20" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Compatible With Duct 12in please note that the total

please note that the total outer dimensions of the grille measure 7" in diameter

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

Width vs Height:

+ Product Details Size - 36"w X 12"h is the size for the duct opening measurement only

Universal Fit – With dimensions of 4-1/8" wide x 7-1/16" high x 2-1/8"

20" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Compatible With Duct 12in please note that the total+ Product Details Size 20"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22" width X 16" 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