By virtue of sand as a filter medium, this pool sand filter is effective in filtering and purifying the water of your pool. This is a considerably economical as well as low-maintenance option to maintain your pool water pristine. Made of high-density polyethylene, this sand filter is highly durable. The filter is designed to achieve a flow rate of 317.8 ft³/h. The maximum working pressure is 3.5 bar. To start the operation, 174.2 lb filter sand (not included) are required. The filter is equipped with a multiport valve with 6 positions: filter, backwash, rinse, winter, recirculate and closed. This sand filter is perfectly suitable for pool pumps of 0.75 HP. Note: It can be connected with both diameter 1.3" and diameter 1.5" hoses. VidaXL