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 650 w/o Non-return valve, barbed connection Hose 3/4" Volts 12 Amps 3.4