16" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Supply Grille + Product Details Size -

+ Product Details Size - 12"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 10"h is the size for the duct opening measurement only

Watch the video

+ Product Details Size – 28"w X 22"h is the size for the duct opening measurement only

[Outer Dimensions: 26

16" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Supply Grille + Product Details Size -+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 18" 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