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 Hose Diameter Connection Size: 6mm

Hose Diameter Connection Size: 6mm i/d

suitable for various applications including ductless mini-split

Actual Filter Size – 27 3/4"w x 33 3/4" x 1"

+ Product Details Size – 4"h X 10"h is the size for the duct opening measurement only

ID tubing with 16 mm or 18 mm connections

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 Hose Diameter Connection Size: 6mm+ 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