8" X 6" Or 6" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 7.75] Powder-Coat + Product Details Size -

+ Product Details Size - 20"w X 34"h is the size for the duct opening measurement only

our damper helps create a well-balanced indoor environment

+ Product Details Size - 40"W X 8"H is (for duct opening measurement only)

1mm PVC coating make these vent covers a top choice for sidewall

8" X 6" Or 6" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 7.75] Powder-Coat + Product Details Size -+ Product Details Size 8"w X 6"h or 6" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 7. 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