Whale Supersub Smart Low Profile Automatic Submersible Bilge Pump 12V 

"The narrow design is ideal for tight spaces and the multi-position pump head and body makes either a vertical or horizontal installation quick and easy. Pump automatically senses the water level and switches on and off as needed with an environmentally friendly, solid-state, mercury free design that is unaffected by wave action. 3" max. overall height, 2-1/8" max. overall width."

GPH: 1100 w/Non-return valve, Hose: 1" - 1-1/8", Volts: 12, Amps: 4.6

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