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 for you. With an impressive filter performance of up to 1.5 microns, they provide more convenient and effective pool maintenance compared to traditional sand filters, which only filter down to approximately 40 microns. These 1000 g filter balls replace 35 kg of filter sand, making them a lightweight and efficient choice. 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 For installation in sand filter systems with a filtration rate of 20-40 m³/h Other information The filter balls are delivered vacuum-packed for easy handling and storage.