4" X 8" Or 8" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 9.75] Condensate Pump Accessories Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 29 3/4" x 1"

+ Product Details Size - 10"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 12"h Is The Size For The Duct Opening Only

this fitting is perfectly compatible with 5-inch ducts

Wall & Ceiling Applications

4" X 8" Or 8" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 9.75] Condensate Pump Accessories Actual Filter Size – 24+ 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