The Basement Watchdog SIT-50D submersible sump pump fits impressive power and pumping capacity into a slim, quiet system. Due to its top discharge design and closely-mounted, adjustable caged dual float switch, it is ideal for use in narrow sump pits. The powerful, energy efficient, permanent split capacitor (PSC) motor is capable of running continuously and provides up to 4,400 GPH at a 0 in. lift while only pulling 4.2 Amps-saving you money in energy savings. Heavy duty cast iron housing guards the eco-friendly, water-cooled motor. Upper and lower ball bearings and dual carbon ceramic and one Buna-N, shaft seals protect the motor from unwanted water, while ensuring exceptionally quiet performance. Every detail, down to the built-in air relief vent provides extra protection, for years of dependable performance.