vidaXL Pool Sand Filter with Side Mount 6-Way Valve GreyBy 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 9 m h. The maximum working pressure is 3. 5 bar. To start the operation, 79 kg filter sand (not included)