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 helping to maintain consistent temperature

helping to maintain consistent temperature settings

Filter Size - 15

+ 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"

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

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

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 helping to maintain consistent temperature+ 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