4" X 30" Or 30" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: [5.75 X 31.75] rg1010 + Product Details Size &

+ Product Details Size & Compatibilty - The 8" to 4" round metal pipe reducer & increaser 30 gauge is compatible with duct 8" to 4"

+ Product Details Size – Duct end cap is 18" X 10" | 26-gauge galvanized steel end cap

actual front end outer dimensions are approximately 34 5/8" width X 22 5/8" height

this versatile access door can be installed in various locations throughout your space

4" X 30" Or 30" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: [5.75 X 31.75] rg1010 + Product Details Size &+ Product Details Size 4"w X 30"h or 30" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 31. 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