P-10000     ( Pond   unit ) Ponds up to 10,000 Gallons 2.0 inch Barb Fitting for  easy slip-on to Flex hose   ------------or-                                  2.0 inch M.P.T. Thread for hard plumb installation Overal Length = 31 inch   Round Diameter = 3.25inch Recommended Flow Rate   5,000 GPH  to  10,000 GPH Each POND unit has been internally insulated for winterized conditions. Built compact for both above or underground installations. MAINTENANCE: Recommended to clean internal sleeve once a year.