The Iwaki RLT type aquarium pumps handle back pressure better than RLXT pumps and can be used for almost any application. They are recommended for high-head situations or when using cartridge (pressure) filters. The MD pumps have Japanese motors.Flow rate: 500 gphMax head: 17.7 feetAmps: .8Dimensions: 9.5" X 3.75" X 5.1"Connections: 3/4" MPT Inlet / 3/4" MPT OutletDoes not come with a plugPerformance charts (new window)Further specifications (pdf file in new window)