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 WMD pumps have American motors.Flow rate: 510 gphMax head: 17.7 feetAmps: 1Dimensions: 11.9" X 3.5" X 4.7"Connections: 3/4" MPT Inlet / 3/4" MPT OutletPerformance charts (new window)Further specifications (pdf file in new window)