Tough bilge pump able to handle exposure to fuel and oil The Rule Non-Automatic Submersible Electric BilgePump offers great performance at a value price. A gasoline resistant base/strainer provides additional mounting options over round models. The motor features a stainless-steel shaft,water cooling and vibration-free centrifugal impellersthat won't burn out if run dry. Strainer bases can easilybe snapped off for cleaning. Installation requires a panelswitch for manual operation or a float switch forautomatic operation. Key Features Square bilge pump with multiple mounting options Gasoline resistant base/strainer Can run dry without damage Vibration-free design for reduced noise Requires float switch and/or panel switch Dimensions: 2 7/8"W x 2 7/8"L x 4"H Owners Manual