This is the HEPA filter for Fellowes air purifiers, it fits perfectly. This is compatible with a few different models, it is best to check the Fellowes website to make absolutely certain it fits your purifier (there are a number of different sizes). This does NOT include the carbon filters.
The air purifier will light up HEPA when it is time to change the filter. After the light comes on you have time to order the replacement filter. It will also light up Carbon when it is time to change the carbon filter.
It took me a while to find the instructions on how to reset the filter reminder. I ended up writing the instructions on the filter holder in black Sharpie. The next time I need to replace the filters, the instructions are right there.
This is the least expensive HEPA filter I have ever seen ($30 at the time of writing this review).
I received the fellowes air purifier for Christmas and needed some more filters. I placed it in my bedroom and you can tell a real difference in the air quality. I have asthma and allergies and this has been a real help. Also, it keeps my room a little less dusty. I don't have to clean as often. Also, we have a beagle who sleeps on my bed and her hairs bother me, but not as much with my air purifier.