12" X 30" or 30" X 12" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 13.75 X 31.75] 14in diameter and hardware for a hassle-free

and hardware for a hassle-free setup

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+ Product Details Size - 6"w X 30"h X 2"d (for duct opening measurement only)

+ Product Details Size & Compatibilty - The 4" to 3" round metal pipe reducer & increaser 30 gauge is compatible with duct 4" to 3"

+ Product Details Size - 8"w X 18"h is the size for the duct opening measurement only

12" X 30" or 30" X 12" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 13.75 X 31.75] 14in diameter and hardware for a hassle-free+ Product Details Size 12"w X 30"h or 30" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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