12"W X 12"H [Duct Opening] Never Rust Plastic 4-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 13.75"W X 13.75"H] Powder Coated The total outer size of

The total outer size of this grille is the listed size plus 2 and 5/85"

Multi-Shutter Damper With Handle Operator - Screws Included

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1-1/8" - 2334 PSI

+ Product Details Size – 30"w X 36"h is the size for the duct opening measurement only

12"W X 12"H [Duct Opening] Never Rust Plastic 4-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 13.75"W X 13.75"H] Powder Coated The total outer size of+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 13. 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