16" X 24" or 24" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 25.75] Width_26in 12" Circular Round Aluminum HVAC

12" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

+ Product Details Size – Sheet metal duct board take off start collar is 12" and it is compatible with duct 12"

Refrigerant - 1/2" White Insulation - 50' Long

This 12" X 12" end cap is constructed with 26-gauge galvanized steel

16" X 24" or 24" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 25.75] Width_26in 12" Circular Round Aluminum HVAC+ Product Details Size 16"w X 24"h or 24" X 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 25. 75" height. High Quality High grade steel construction meant for high foot traffic areas. Installation Location Floor. Design Easy drop in installation. Powder Coat Finish Smooth, shiny, scratch resistant, with no sharp edges. Looks like it was just waxed. Quality Packaging Carefully