Self priming external pump. Rugged, weatherproof motors are energy efficient and long lasting. All sizes have dual voltage motors with 8' power cord. Pumps are shipped 115 volt but can easily be field changed to 230 volt. Very quiet operation. Built-in 90 cubic inch strainer basket. Includes free inlet/outlet unions. Max 228 watts. Max 3700 GPH. 2.7 amps. 2" Inlet, Outlet. 54 GPM at 5' Head, 38 GPM at 10' Head, 25 GPM at 15' Head, 8 GPM at 20' Head. 3 Year Limited Manufacturer's Warranty.