ADT33 is a submersible cast iron and coated steel sump pump with tether float switch. For use in 14 diameter or larger sump basins; 13 on level and 7 off level. Engineered with Upper and lower ball bearings, in sealed oil bath, for virtually silent operationDurable epoxy-coated and rugged cast iron construction, for long life in tough sump pump applicationsMax. flow rate is 4600 Gallons Per Hour; 3060 GPH at 10 ft. of discharge liftPiggy-back tether float switch, for automatic or manual operation; 13 in. ON level and 7 in. OFF levelNo need for weep holes; Unique Top Suction Design reduces clogging and prevents air lock condition8 ft Water Resisitant Power Cord provides easy access to nearby GFCI protected outlet