Model 71400 14 Inch Sand Filter Tank with 4 Way Valve and BaseHigh quality Swimline Hydrotools sand filter tank, base and 4 way valve for use with above ground pools using the filter pump of your choice The Model 71400 14 Inch Sand Filter Tank with 4 Way Valve and Base Features Include Heavy duty and durable 14" sand tank with drain plug 4 Way valve with Filter, Backwash, Rinse and Waste operation selections Strong heavy duty base Genuine Swimline Hydrotools parts