The Grundfos Unilift KP350-M-1 1x220-240V 50Hz 10m is a stainless steel manual sump pump, max flow rate 3.8l/sec and max head 9m, 1 1/4" threaded connections and 10mm solids handling. The Grundfos Unilift KP range are light submersible drainage pumps which can be used for cellars, surface drainage and anything involving slightly dirty water. The pumps are double-sealed ensuring long service life.