4" X 16" or 16" x 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 17.75] w22h22 Whether you're establishing trunk lines

Whether you're establishing trunk lines or branch-like runs

and virtually anywhere a condensing pump is necessary

Suitable for both commercial and residential settings

+ Product Details Size – 24" x 28" or 28" x 24" is the size for the duct opening measurement only

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4" X 16" or 16" x 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 17.75] w22h22 Whether you're establishing trunk lines+ Product Details Size 4"w X 16"h or 16" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 17. 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