General description vhbw filter balls offer a sustainable and efficient alternative for your sand filter system. Designed to replace heavy sandbags, these filter balls provide impressive filtration performance, ensuring cleaner pool water and easier maintenance. 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 Kesser 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 storage