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

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

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

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

Installs Directly On Round & Oval Spiral Duct - No Frames

+ Product Details Size - 30"w X 24"h is the size for the duct opening measurement only

14" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Filter Grille + Product Details Size -+ Product Details Size 14"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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