This unit has a marine grade yellow 1400W motor housing, a stainless steel pump body and is forced-air cooled to reduce heat build-up. This powerful unit is suitable for indoor/weather protected use for clean tank water only.(Not water from ponds, lakes, rivers etc.). Able to pump 4,200 litres per hour/ 70 litres per minute this pump is designed for pumping clean tank water which is connected to a system where the water flow is controlled with a tap. Some 2300 watt power draining monsters not only pump up plenty of water but they also pump up your electricity bill! At 1400 watts this pump is much, much cheaper to run and will still pump plenty of tank water for garden irrigation needs.