This Laing E14 circulation pump has 1.5" fittings, and is compact and light, it utilizes an electronically commutated motor (ECM) which is shaft-less, seal-less, and leak-proof. It is 40% more efficient and whisper quiet, its open face impeller provides fantastic resistance from clogging up with debris. Dimensions Length: 160mm Width: 135mm Height: 160mm Specifications Volts: 230 Hz: 50 Watts: 110 RPM: 2700