10"W X 4"H [Duct Opening] Never Rust Plastic 2-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 5.75"H] Powder Coated + Product Details Size &

+ Product Details Size & Compatibilty - The 4" to 3" round metal pipe reducer & increaser 30 gauge is compatible with duct 4" to 3"

in the wall/duct

+ Product Description Maximize your home’s airflow with this premium Air Supply Grille air supply grille

actual front end outer dimensions are approximately 24 5/8" width X 32 5/8" height

actual front end outer dimensions are approximately 20 5/8" width X 16 5/8" height

10"W X 4"H [Duct Opening] Never Rust Plastic 2-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 5.75"H] Powder Coated + Product Details Size &+ Product Details Size 10"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 5. 75" height. Design Rigid gauge ABS plastic. Rigid gauge built for durability and long life in mind, but still light and handy. Powder coat finish. Smooth, scratch resistant, beautiful. Looks like new after years of use. Screws Included High Quality High quality ABS plastic will never rust, no sharp