General description vhbw filter balls offer a sustainable and efficient alternative for your sand filter system. These innovative filter balls provide impressive filtration performance, ensuring cleaner pool water without the hassle of heavy sandbags. With a filtering capability of up to 1.5 microns, they significantly outperform traditional sand filters, which only filter down to approximately 40 microns. The 1000 g filter balls replace 35 kg of filter sand, making pool maintenance more convenient and effective. Technical specifications Diameter: 5 cm Height: 8.8 cm Material: polyethylene Colour: white Weight per package: 1000 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 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