General description vhbw filter balls provide a sustainable and efficient alternative for your sand filter system. These filter balls are designed to enhance pool maintenance by offering impressive filtration performance, filtering down to 1.5 microns, compared to traditional sand filters that only filter down to approximately 40 microns. With just 1000 g of filter balls, you can replace 35 kg of filter sand, making it a convenient solution for pool owners. 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 Other information Delivered vacuum-packed for easy handling and storage