The EFL33 is a durable submersible effluent pump made of reinforced thermoplastic and a cast-iron seal plate. The piggyback tether float switch allows for atuomatic or manual operation, while the combination of 2"/3" NPT discharge is capable of handling up to 3/4" solids. It is designed for easy installation without any plumbing changes, and has low ball bearings for supremely quiet operations. Plus, the 1/3 HP motor pumps up to 5700 GPH @ 0' to cut through consumer and light-commercial jobs.