20" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 21.75] Color_Red Oak Wood + Product Details Size –

+ Product Details Size – 18" round duct sheet metal elbow - 30 gauge galvanized - crimped end connection - adjustable from 5° - 90°

fasten the edges to studs with the provided screws

+ Product Details Size & Compatibility – The 5" galvanized sheet metal round to oval elbow boot is compatible with duct 5"

and animals

Actual Filter Size – 33 3/4"w x 21 3/4" x 1"

20" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 21.75] Color_Red Oak Wood + Product Details Size –+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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 shrink