6" X 16" or 16" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 17.75] Sheet Metal Fittings actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 14 5/8" height

simply pop the diffuser into the wall duct hole and let the side springs hold it securely in place

Hose Diameter Connection Size: 6mm i/d

Actual Filter Size – 24 3/4"w x 21 3/4" x 1"

6" X 16" or 16" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 17.75] Sheet Metal Fittings actual front end outer dimensions+ Product Details Size 6"w X 16"h or 16" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 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