20" X 24" Or 24" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 25.75] 7" Round Duct Pipe R value rating of insulation

R value rating of insulation - R3

+ Product Details Size – 22"w X 8"h is the size for the duct opening measurement only

Crafted from solid aluminum with no welded edges

85" width X 9

+ Product Details Size – 10"w X 16"h or 16" x 10" is the size for the duct opening measurement only

20" X 24" Or 24" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 25.75] 7" Round Duct Pipe R value rating of insulation+ Product Details Size 20"w X 24"h or 24" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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