24" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Diameter [Outer Dimensions: 12

[Outer Dimensions: 12

+ Product Details Size - 24"w X 36"h X 2"d (for duct opening measurement only)

And Meets/Beats ASTM B280 Standard

+ Product Details Size - 26"w X 24"h is the size for the duct opening measurement only

24" X 16" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Diameter [Outer Dimensions: 12+ Product Details Size 24"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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