General description vhbw offers a set of 3 round filters designed for standard, robotic, wet, or multipurpose vacuum cleaners. Regular replacement of these filters is essential for optimal dust extraction and motor protection against impurities, which in turn enhances the service life of your vacuum cleaner while maintaining high suction power. It is recommended to change the filters every 6 to 12 months or when cleaning efficiency declines. Technical specifications Outer diameter: 320 mm Height: 12.4 cm Largest width: 32 cm Material: plastic / microfleece Form: round Colour: black / white Weight of each filter: 134 g Compatibility and accessories Replacement for Numatic 604165, 604115 Content of delivery: 3x round filter