Still, looking for the proper filter for your air purifier? This active carbon filter can properly combine with an air purifier to release fresh air for you and your family. And it can powerfully absorb and solidify as well as crystallize, further removing chemical substances such as benzene and other peculiar smell. This durable filter filled with carbon will help you create a clean and comfortable living condition. We suggest replacing the old and dirty filter every year. But you can replace it earlier according to the actual operating environment. And the filter net is designed with a strap for easy pulling and replacing.