With a flow rate of 10gpm, this macerator quickly passes toilet waste, gray water and fish box tank contents. Designed for years of trouble-free service, features include a durable high torque motor with thermal overload protection and cast-bronze, corrosion-resistant chopper blade. The chemically resistant nitrile rubber impeller stands up to toilet chemicals. With a flow rate of 10gpm, this macerator quickly passes toilet waste, gray water and fish box tank contents. Designed for years of trouble-free service, features include a durable high torque motor with thermal overload protection and cast-bronze, corrosion-resistant chopper blade. The chemically resistant nitrile rubber impeller stands up to toilet chemicals.