Danner's Pondmaster® Magnetic Drive Utility Pumps have been designed and manufactured using the latest developments in magnetic technology. It has no seals to wear and contains no oil. The pump can be used submerged or in-line. In-line means connections are made directly to the pump inlet and outlet ports, which have 1/2" NPT threads. All electrical components are encapsulated in epoxy with no seals to wear or break. The pre-filter is provided for use in situations where deposits in the water could clog or damage the pump. Designed for pond use, for fountains, waterfalls, statuary and aquariums. Also extremely energy efficient - over 50% savings compared to equivalent conventional pumps. Max output: 700 gph; Max. pump height: 12 1/2' ; 60 watts; 18' power cord. Shipping weight: 4 1/2 lbs.