General description vhbw filter balls offer a sustainable and efficient alternative to traditional sand for your pool filter system. These filter balls provide impressive filtration performance, filtering down to 1.5 microns, significantly better than sand, which only filters down to approximately 40 microns. With a lightweight design, 500 g of filter balls can replace 17.5 kg of filter sand, making pool maintenance more convenient and effective. Technical specifications Diameter: 5 cm Height: 8.3 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 Designed for sand filter systems with a filtration rate of 20-40 m³/h Other information Delivered vacuum-packed for easy handling and storage