General description vhbw filter balls offer a sustainable and efficient alternative for your sand filter system. These filter balls provide impressive filtration performance, making pool maintenance more convenient and effective. With a capacity to replace 17.5 kg of traditional filter sand, they are a lightweight and eco-friendly solution for keeping your pool water clean. Technical specifications Diameter: 5 cm Material: polyethylene Colour: white Weight per package: 500 g Filter performance: up to 1.5 microns Replacement cycle: every 2 - 5 years Reusable and washable by hand or in the washing machine Non-toxic and recyclable Compatibility and accessories Compatible with Arebos and sand filter systems with a filtration rate of 20-40 m³/h Replacement for 58475, 040050 Other information Delivered vacuum-packed for easy handling and storage