T-H Marine Duck Bill Scupper DBS-2B, 2-3/4 in Black/White Thermoplastic Flapper, Universal Replacement

The T-H Marine DBS-2B Duck Bill Scupper is a thermoplastic flapper-style drain fitting designed to seal tightly under water pressure while allowing water to drain freely from the boat. Built with a tough, molded thermoplastic duck bill flapper, it closes securely to block backflow, keeping water out of livewells, decks, and other drained compartments even when the boat is underway or sitting at anchor. The DBS-2B is finished in a black flapper with a white outer ring for a clean, factory-style appearance.

Installation is straightforward: the DBS-2B slides directly over standard drain tubes, and its universal hole pattern and size are designed to replace most existing flapper-style scuppers without modification. This makes it a practical upgrade for boat owners dealing with a cracked, stiff, or leaking duck bill flapper, or anyone building out a new drain or livewell system. The fitting is lightweight at 0.05 pounds, so it adds minimal weight to the installation while still standing up to repeated exposure to water and marine conditions.

Specifications

• Brand: T-H Marine
• Manufacturer Part Number: DBS-2B
• Product Name: Duck Bill Scupper
• Color: Black flapper / White outer ring
• Material: Thermoplastic
• Outer Ring Diameter: 2-3/4 inches
• Inlet Connection Size: 2.75 inches
• Outlet Connection Size: 2.75 inches
• Outlet Connection Type: Over tube
• Valve Type: Scupper
• Hole Pattern: Universal, sized to replace standard flapper scuppers
• Weight: 0.05 pounds
• UPC: 733572050554

Frequently Asked Questions

What is the outer ring diameter of the T-H Marine DBS-2B duck bill scupper? The DBS-2B has an outer ring diameter of 2-3/4 inches.

What color is the DBS-2B scupper? It has a black thermoplastic flapper paired with a white outer ring.

Will this duck bill scupper fit my existing drain tube? The DBS-2B is built with a universal hole pattern and size, so it is designed to replace most existing flapper-style scuppers without modification.

What material is the DBS-2B flapper made from? The flapper and body of the DBS-2B are made from tough thermoplastic material.

How does the duck bill flapper design work? The thermoplastic duck bill flapper closes and seals tightly under water pressure, blocking backflow while still allowing drainage.

How is the DBS-2B installed? It installs by sliding the fitting over a standard drain tube, using its universal hole pattern for a straightforward fit.

How much does the DBS-2B duck bill scupper weigh? The DBS-2B weighs 0.05 pounds.

Is the DBS-2B a universal replacement part? Yes, the DBS-2B is designed with a universal hole pattern and size intended to replace most existing flapper-style scuppers.

What is the UPC for the T-H Marine DBS-2B? The UPC for the DBS-2B duck bill scupper is 733572050554.

Can the DBS-2B replace a cracked or worn duck bill scupper? Yes, the DBS-2B is intended as a direct-style replacement for worn or damaged flapper-style duck bill scuppers, using the same universal hole pattern.

What is a duck bill scupper used for? A duck bill scupper like the DBS-2B fits over a drain tube to let water flow out of the boat while its flapper seals tightly under water pressure to keep water from flowing back in.