General description These replacement HEPA filters are designed specifically for the Narwal Freo X Ultra and Narwal J4 robotic vacuum cleaners. Made from high-quality materials, they are durable and perfectly matched to the equipment, ensuring optimal performance. Regularly replacing these filters helps maintain a clean environment by reducing dust, pollen, and other allergens in the air. Technical specifications Color: as shown Material: plastic Package Contents: 10 x Sweeper Filter Measurement allowed error: +/- 1-3 cm Usage To achieve the best cleaning and filtration effect, it is recommended to replace the cleaning accessories every 2-3 months, depending on the frequency of use. The filters function to capture dust, dirt, and other impurities, preventing them from entering the robot's motors and extending its lifespan.