T-H Marine Scuppers & Drains
T-H Marine Scuppers & Drains: Purpose-Built Cockpit Drainage
Few components on a boat are as quietly critical as its scuppers and drains. When a wave breaks over the bow or rain floods the cockpit, a properly functioning drainage system is what stands between a dry, safe deck and pooling water that adds weight, creates slip hazards, and accelerates corrosion. T-H Marine — a family-owned manufacturer of boat parts and accessories founded in 1975 that has grown into a 200+ employee corporation offering several thousands of products — brings that same engineering discipline to its line of scuppers and drains.
A Lineup Engineered for Real-World Drainage Demands
T-H Marine's scupper and drain catalog addresses the most common drainage scenarios found on recreational and fishing boats. The standout product is the Flow-Max™ Ball Scupper. Its larger exit hole allows 70% more water drainage than its nearest competitor, multiple mounting holes make retrofits quick and easy with no filling holes or re-drilling, and a neutral buoyancy ball ensures the ball won't float up and break the seal. It meets all ABYC standards and features an easy twist-off design for cleaning — simply twist counterclockwise to remove the ball cavity, clean out, and twist back on.
For boaters who prefer a more traditional profile, the Recessed Flapper Scupper Drains deliver a proven solution with modern refinements. These innovative push-together scuppers easily snap together to adjust to varying hull thicknesses, with mating ribs that lock the pieces together for a secure installation. Utilizing flexible thermoplastic, these scuppers are impervious to marine chemicals and sun damage, ensuring longevity. The Flush Mount Flapper Scupper variant is designed to mount over a drain tube or directly to a 1½" thru hull, and these flappers will retrofit other manufacturers' rubber flapper assemblies — a major convenience for anyone upgrading aging hardware.
Rounding out the lineup are Large Rectangular Scuppers, optimized for high-volume surface drainage. Designed for decks above the waterline, these rectangular scuppers deliver maximum drainage for larger boats and easily clear debris, fitting a 2" x 5½" opening.
Built for the Marine Environment
Every T-H Marine scupper is constructed with the rigors of on-water use in mind. High-strength, UV-stabilized polymer construction ensures these components hold up against years of sun exposure, salt spray, and chemical contact. The Cockpit Scupper Drain takes this further: the check ball inside is molded and then ground smooth and round to provide better sealing against reverse water flow that occurs when backing the boat. An optional leaf guard model features raised ribs on the head to prevent debris such as leaves and scales from clogging holes.
T-H Marine products are found on virtually every type of recreational boat built in the United States, from bass boats and pontoon boats to offshore fishing boats, flats boats, and center console boats — making their scupper and drain fittings a trusted OEM-grade choice for replacement and upgrade projects alike. Whether you're refreshing a leaking cockpit drain or upgrading to higher-flow hardware, T-H Marine's drainage solutions deliver reliable, long-term performance.
