General description vhbw offers a high-quality, precision-fit HEPA filter designed for air purifiers, making it ideal for allergy sufferers. These filters effectively extract tiny dust particles and impurities from the air, including household dust, smoke, mould spores, and pollen, resulting in a more pleasant indoor environment and improved air quality. Technical specifications Dimensions (L x W x H): 25.4 x 12.5 x 3.5 cm Weight: 108 g Material: plastic Colour: white with black plastic frame With baking soda Replacement cycle: every 6 - 12 months Compatibility and accessories Compatible with Bionaire models: BAP242S, BAP9420, BAP9240, BAP412S Replacement for BAPF30B Usage HEPA filters are disposable and should be replaced every 6 to 12 months to maintain optimal performance.