General description These vhbw replacement filters are designed for Kärcher NT 301 (1.722-121.0) and NT 351 vacuum cleaners. They are essential for maintaining optimal dust extraction and ensuring clean exhaust air. Regularly changing the filter enhances the vacuum cleaner's performance and prolongs its lifespan. Technical specifications Outer diameter: 190 mm Height: 19.7 cm Material: paper Form: device-specific Colour: yellow Washable Weight: 200 g Compatibility and accessories Compatible with Kärcher NT 301 (1.722-121.0) Compatible with Kärcher NT 351 Replacement for Kärcher 6.414-354.0, 6.414-335.0 Not compatible with Kärcher A 2201 Installation Filters can be easily installed and removed due to their precision-fit dimensions. Attachment options include a bayonet lock or a knurled nut. Usage Regularly change the filter to maintain high suction power and protect the motor from dirt build-up. Ensure the filter is clean to prevent reduced suction power and overheating of the motor.