Still looking for the proper filter for your air purifier? This active carbon filter can properly combine with air purifier to release fresh air for you and your family. And it can powerfully absorb and solidify as well as crystallize, further remove 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. And the filter net is designed with a strap for easy pulling and replacing. Costway Active Carbon Replacement Filter Air Purifier Filter Net Home Air Purifier Parts & Accessories in Black