6" X 10" Or 10" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 11.75] Round Pipe + Product Details Size -

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

actual front end outer dimensions are 17" Width X 17" Height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 18" duct openings

purposes with tumbler lock & key (2 keys included) and can be installed on drywall

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

6" X 10" Or 10" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 11.75] Round Pipe + Product Details Size -+ Product Details Size 6"w X 10"h or 10" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 11. 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