4/10 hp Submersible High-Head Effluent Pump designed to handle 3/4" solids. Shut-off at 45', cast-iron base, motor housing and motor cover (thermoplastic cover on SFS models), thermoplastic elastomer non-clog impeller, thermal overload protection, and 1-1/2" FNPT discharge. Automatic "RF" versions feature a tethered remote float with "piggyback" plug and "SFS" models feature an integral Snap-Action Float Switch. RF float switch has approximate 9"-14" "on" level and 2"-6" "off" level and SFS switch has approximate 9"-12" "On" level and 3"-6" "Off" level.