Flush Mount Scupper Adapters
These flush mount flapper scuppers are designed to mount over a drain tube or to mount directly to a 1-1/2" thru hull with four screws.
They feature the "curl proof" flapper. These flappers will retrofit other manufacturers' rubber flapper assemblies.
Mounts over 1" to 1-1/4" drain tubes
Groved inside to fit over drain flange