1/3 HP iron and coated steel submersible sump pump. in the US with abroad and home parts. switch tested to 1 million cycles. best suction pump design air locks and clogging from debris in lower of sump pit. Epoxy-coated steel motor housing and hardy, iron pump base. Fully. 1/3 ; max flow rate is 3800 GPH at 0 ft. 1 1/2 in. NPT. For in 11 in. or larger sump basins ; 9 in. ON and 4 in. OFF.