4" X 8" Or 8" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 9.75] Height_24in + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 24" OR 24" x 36" duct opening (measured at the opening)

actual front end outer dimensions are approximately 26 5/8" width X 14 5/8" height

MERV 8 - Your Ideal Choice: Experience the perfect balance of filtration with MERV 8 rating

+ Product Details Size - 30"w X 8"h X 2"d (for duct opening measurement only)

The total outer size of this grille is the listed size plus 2 and 5/8"

4" X 8" Or 8" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 9.75] Height_24in + Product Details Perfect Fit+ Product Details Size 4"w X 8"h or 8" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 9. 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