ARKSEN 2100 GPH Submersible Pond Adjustable Pump Energy saving up to 60% with electronic frequency conversion technology Pump suitable for waterfalls, pond filtration systems, or any other pond application Allow large size of dirt particle up to 1/4" w/ spiral propeller design Max Flow Rate: 2100 GPH (8000L/H), H-Max (Lift Height): 18 feet, Barbed fitting supplied 3/4" - 1-1/4" Overall Dimension: 7-1/2"(L) x 5"(W) x 5-1/2"(H)