T-H Marine Large Rectangular Scupper - White

The T-H Marine Large Rectangular Scupper in white is a marine drainage component engineered for rapid water removal from deck surfaces positioned above the waterline. This large rectangular scupper is built to handle high-volume deck drainage on larger vessels where standard drainage solutions prove insufficient. The fixture accepts openings measuring 2 inches by 5.5 inches, making it compatible with common marine through-hull configurations. T-H Marine Supplies (MPN: LRS-2-DP) has designed this unit specifically for situations where quick water clearance is critical to deck safety and vessel integrity.

The scupper's geometry prioritizes unobstructed flow while incorporating a debris-clearing design that prevents sediment and marine growth from blocking drainage passages. Measuring 5 by 2 by 11 inches overall and weighing just 0.35 pounds, this marine drain fitting operates on fundamental fluid dynamics: the rectangular opening provides maximum cross-sectional area per unit size, reducing backpressure and allowing faster evacuation of standing water during heavy seas or heavy rain events. The white color maintains visibility and reduces UV fade concerns common with marine hardware exposed to sustained sunlight and salt spray environments.

Vessel operators managing boats large enough to require maximum deck drainage capacity—commercial fishing platforms, offshore patrol boats, and deep-water cruising yachts—rely on large rectangular scuppers to prevent deck pooling and reduce corrosion risk on critical deck hardware. Marine surveyors and boat maintenance professionals specify this T-H Marine model when original or undersized drainage systems require replacement. The large rectangular scupper category itself demands compatibility verification; confirm your deck opening dimensions match the 2-inch by 5.5-inch requirement before ordering to ensure proper fit and maximum drainage efficiency.