General description Are you looking for a sustainable, environmentally friendly yet efficient alternative for your sand filter system? The vhbw filter balls are the perfect solution, providing impressive filter performance and convenient pool maintenance. With these filter balls, you can replace 17.5 kg of filter sand with just 500 g, making pool care easier and more effective. Technical specifications Diameter: 5 cm Material: polyethylene Colour: white Weight per package: 500 g Replacement cycle: every 2 - 5 years Filter performance: up to 1.5 microns Reusable Washable by hand and in the washing machine Non-toxic & recyclable Compatibility and accessories Compatible with Zodiac and sand filter systems with filtration rate of 20-40 m³/h Replacement for 58475, 040050 Other information Delivered vacuum-packed for easy handling and storage