General description vhbw offers a high-quality, precision-fit HEPA filter designed for air purifiers, making it ideal for allergy sufferers. These filters are crafted from carefully selected materials to ensure top filtration performance, effectively extracting tiny dust particles and impurities such as household dust and pollen from the air. With an enlarged surface area, they filter out pollutants and even odors more thoroughly, resulting in a more pleasant indoor environment and improved air quality. HEPA filters are disposable and should be replaced every 6 to 12 months. Technical specifications Dimensions (L x W x H): 21 x 10 x 4 cm Particle filter classification: HEPA 13 Weight: 87 g Colour: black / white Replacement cycle: every 6 - 12 months Filters up to 99.95% of particles up to 0.1 micron, including allergens, bacteria, house dust, mites, pollen, mould spores, aerosols, and formaldehyde Compatibility and accessories Compatible with Baren B-747, B-757 Replacement for B-H04,