Fellowes CF-230 Carbon Filter for the Fellowes AP-230PH Air Purifier (9372001) Removes odors and captures large airborne particulates Sanitized effectively reduces the development of bacteria, fungi and dust mites on carbon filter Compatible with Fellowes AP-230PH Air Purifier This items packaging will indicate what is inside and cannot be hidden To ensure optimal performance, only genuine Fellowes filters shipped and sold by Amazon.com should be used. Filters purchased from third party sellers may not be authentic and therefore can cause issues and void product warranties.