6" X 20" Or 20" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 21.75] Compatible with Duct 7" Actual Filter Size – 11

Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

This ensures superior performance and efficiency in any application

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

+ Product Details Size – 30"w X 20"h is the size for the duct opening measurement only

6" X 20" Or 20" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 21.75] Compatible with Duct 7" Actual Filter Size – 11+ Product Details Size 6"w X 20"h or 20" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 21. 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