Enjoy Crystal Clear Water: Keep your above ground swimming pool performing flawlessly with our Vortex Sand Filter Tank Above Ground Pool Filter: Our swimming pool filter features hydraulically balanced laterals to maximize water flow and filtration 7-Position Dial Valve: Featuring a 7-position dial valve with 360 degree rotation and flange clamp attachment for easy management of the system Capacity: The extra large tank holds 175lb of #20 silica sand or 88lb ZeoSand Easy Maintenance: The tank features an easy-access drain plug to simplify winter maintenance The Harris Vortex 19-Inch Above Ground Sand Filter is the perfect way to filter your Above Ground pool! Offering remarkable performance for its size and cost, this Above Ground pool filter features a high-tech 7-position dial valve with a flange clamp that allows for full 360-degree rotation. A perforated plastic locator helps distribute pool sand evenly without getting into the stem pipe. The maximum pressure of this filter is 40 PSI, with a flow rate of 40 gallons per minute. Tank filters approximately 19,200 gallons every 8 hours. This filter requires 175 pounds of #20 Silica Sand or ZeoSand.