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TH Marine Flow Max Ball Scuppers allow boat owners to never again worry about slow drainage or clogged scupper valves. The Flow-Max scupper has a large 1 1/8'' drain for faster draining. Accumulated debris is easy to get rid of; simply twist the Flow-Max off, remove the gunk, and twist back in place. Replace your boat's worn flapper-style scuppers with this easy-to-retrofit solution.
Flow Max Ball Scuppers come with a stainless steel security pin for added safety. Meets all ABYC standards.