Shower Sump Drain Box Pump System 750GPH 12V Bilge Drain Multi-Port Box

750GPH with Built-in Automatic Float Switch. 1 Piece 12V Shower Sump Pump System. Designed to pump shower/ sink water over board or into holding tank. Multiple Inlet Port Sizes: 3/4", 1", 1-1/8", 1-1/2".

eBay