4" X 10" or 10" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 11.75] Round Stack Boot Design – This round ends

Design – This round ends no crimp boot duct fitting is designed for transitioning oval wall stack ducting to round sheet metal pipe

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 22" duct opening (measured at the opening)

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

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4" X 10" or 10" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 11.75] Round Stack Boot Design – This round ends+ Product Details Size 4"w X 10"h or 10" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 11. 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