18" X 30" Or 30" X 18" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 19.75 X 31.75] Material_Copper actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 10" duct openings

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 18" OR 18" x 20" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 22" OR 22" x 36" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 36" OR 36" x 18" duct opening (measured at the opening)

18" X 30" Or 30" X 18" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 19.75 X 31.75] Material_Copper actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 18 5 8" width X 32 5 8" height Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 10" duct openings