16" X 20" or 20" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 21.75] 170BL 25X16 + Product Details Size &

+ Product Details Size & Compatibility – The size of the side round ceiling box is 10" X 10" X 7" and it is compatible with duct 7"

actual front end outer dimensions are approximately 13" width X 13" height -

High Quality – High-quality aluminum with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size - 40"W X 4"H is (for duct opening measurement only)

helping to maintain consistent temperature settings

16" X 20" or 20" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 21.75] 170BL 25X16 + Product Details Size &+ Product Details Size 16"w X 20"h or 20" X 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 21. 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