24" X 30" or 30" X 24" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 25.75 X 31.75] Black the actual front end outer

the actual front end outer dimensions are 10" in diameter

allowing easy attachment of straight or split fittings for your ductwork needs

+ Product Spec Sheet Outdoor Louver Spec Sheet

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 12" OR 12" x 22" duct opening (measured at the opening)

+ Product Details Size – 4"w X 10"h or 10" x 4" is the size for the duct opening measurement only

24" X 30" or 30" X 24" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 25.75 X 31.75] Black the actual front end outer+ Product Details Size 24"w X 30"h or 30" X 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" width X 31. 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