PERKO Spare Flapper for Thru-Hull Scuppers

The PERKO Spare Flapper is a replacement part designed for select PERKO thru-hull scuppers. Compatible with Figure No. 0333 (Thru-Hull Scupper for transom mounting) and Figure No. 0343 (Adjustable Thru-Hull Scupper), this flapper helps maintain proper drainage and prevents backflow into your vessel. Built with marine-grade durability, it’s an essential spare to keep your boat’s drainage system performing reliably.