20" X 26" Or 26" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 27.75] Material_Copper This metal box features a

This metal box features a 10" width and 6" height

+ Product Details Size - 24"W X 4"H is (for duct opening measurement only)

heavy-duty weatherproof molded bottom fully protects your tools from any rust or damage

Ensure that all joints are sealed to prevent leaks

75"H – fits a 18" X 12" duct opening

20" X 26" Or 26" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 27.75] Material_Copper This metal box features a+ Product Details Size 20"w X 26"h or 26" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 27. 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