12"W X 8"H [Duct Opening] Never Rust Plastic 3-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 13.75"W X 9.75"H] Condensate Pump + Product Details Size –

+ Product Details Size – Stick-on collar is 6" and it is compatible with duct 6"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening)

Say goodbye to low-quality fiberglass filters below MERV 4

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How to Measure Your Vent Hole Before Ordering a Grille

12"W X 8"H [Duct Opening] Never Rust Plastic 3-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 13.75"W X 9.75"H] Condensate Pump + Product Details Size –+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 9. 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