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] w16h16 + Product Description Introducing the

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 12" duct openings

actual front end outer dimensions are 11

Filter Size - 15

actual front end outer dimensions are approximately 16 5/8" width X 32 5/8" height

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] w16h16 + 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