10"W X 10"H [Duct Opening] Never Rust Plastic 4-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 11.75"H] w28h28 + Product Description Introducing the

+ Product Description Introducing the 6" Butterfly Damper – Your Solution for Controlled Airflow

+ Product Details Size – 22"w X 34"h is the size for the duct opening measurement only

875" width X 20" height

actual front end outer dimensions are approximately 38 5/8" width X 32 5/8" height -

and with a built-in back 1/2" mesh they also protect you from annoying rodents like mice

10"W X 10"H [Duct Opening] Never Rust Plastic 4-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 11.75"H] w28h28 + Product Description Introducing the+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 11. 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