18" X 24" Or 24" X 18" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 19.75 X 25.75] Return Grille 9% Pure Copper meeting ASTM

9% Pure Copper meeting ASTM B280 standards

designed to prevent corrosion

75"H – fits a 24" X 10" duct opening

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

+ Product Details Size & Compatibilty - The 14" to 10" round metal pipe reducer & increaser 30 gauge is compatible with duct 14" to 10"

18" X 24" Or 24" X 18" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 19.75 X 25.75] Return Grille 9% Pure Copper meeting ASTM+ Product Details Size 18"w X 24"h or 24" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" width X 25. 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