- Odour filter activated carbon. Cooker hood filter. High-quality environmentally friendly materials. The pre-filters are made of activated carbon, environmentally friendly and helps to keep your room fresh and odourless. They are thicker than conventional pre-filters, allowing for longer service life. - cat litter tray filter. Activated carbon filter cooker hood. Compatibility with different models. These 4 pieces carbon sponge filters are compatible with different and Holmes air purifier models. They fit models BAP260, BAP815, BAP825, BAP1412, BAP1502, BAP1525, BAP1700, BAP8500, HAP2400, HAP242, HAP412, HAP422, HAP424, HAP120. 0, HAP706 and HAP716. - Activated carbon filter cooker hood. Filter mat ventilation system black. Customer satisfaction comes first. We attach great importance to customer satisfaction. If you have any questions about our product or encounter any problems, please do not hesitate to contact us. Our customer service team is happy to help you and will be happy to answer your questions and solve problems. - Easy Use and Installation. The pre-filters are used together with the main filter in your air purifier. One pack contains 4 pre-filters so you always have a replacement on hand. - Use scenarios. Use after cooking to remove odours in the kitchen; in homes with pets or cat litter trays to reduce odors; in rooms with smoke or strong smells to maintain fresh air.