16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Floor Grille High Standard Quality - Every

High Standard Quality - Every part is hand inspected for quality before it is packaged

Two Mounting Base Options – Includes both a solid base and a ring base

SIZE & SPECS - The size of a Duct End Cap is 8 X 6

Highest it can pump: - 20 meters

Easily adjust dimensions with precision knobs

16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Floor Grille High Standard Quality - Every+ Product Details Size 16"w X 18"h or 18" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 19. 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