8" X 30" Or 30" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 31.75] 18" Round Duct Pipe only measure the "hole"

only measure the "hole"

Built to Last: Reinforced and ribbed design ensures durability and prevents bending under pressure

+ Product Details Size – 8" x 36" or 36" x 8" is the size for the duct opening measurement only

Designed with individually adjustable curved blades

+ Product Details Size - 16"w X 10"h X 2"d (for duct opening measurement only)

8" X 30" Or 30" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 31.75] 18" Round Duct Pipe only measure the "hole"+ Product Details Size 8"w X 30"h or 30" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 31. 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