3" X 10" OR 10" X 3" Floor Register with Louvered Design - Heavy Duty Rigid Floor Air Supply with Damper & Lever - Outer Dimensions [ 4.5 X 11.5] - Light Grey 6in diameter /* increased padding */ border-radius:

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if your hole is 20" wide by 14" tall

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening)

preventing mold and mildew buildup in indoor and outdoor spaces

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings

3" X 10" OR 10" X 3" Floor Register with Louvered Design - Heavy Duty Rigid Floor Air Supply with Damper & Lever - Outer Dimensions [ 4.5 X 11.5] - Light Grey 6in diameter /* increased padding */ border-radius:+ Product Details Size 3"w X 10"h or 10"w X 3"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 4. 5" X 11. 5" wider. High Quality Extra Heavy Duty to withstand constant walk on situations. Installation Location Floor. Design Rigid gauge built for durability and long life in mind, but still light and handy. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just