The RLXT type aquarium pumps are best suited for circulation only--situations where water encounters very little back pressure. The WMD pumps have American motors.Flow rate: 420 gphMax head: 14.1 feetAmps: .45Dimensions: 10.5" X 3.5" X 4.4"Connections: 3/4" MPT Inlet / 3/4" MPT OutletPerformance charts (new window)Further specifications (pdf file in new window)