[Highly Efficient] The 400 W sand filter system from AREBOS with a flow rate of up to 10,200 l/h and a delivery head of up to 8.5 m will keep your pool clean. This filter system is suitable for virtually all commercially available pools to a maximum size of approx. 40 m³. [7-way valve] Equipped with a high-quality multi-function valve, enables you to easily handle and control the filter system and also offers you numerous important functions such as filtering, backwashing, rinsing, draining, circulating, closing as well as a rest mode for winter. [Large Tank] The large tank can be filled with up to 27.5 kg of sand. Alternatively, you can operate the filter system with the filter balls included in the delivery scope. Your advantage: No hard work, easy cleaning, environmentally friendly.