BLUEAIR Blue Pure 311i Max Genuine Replacement Filter, Blue Pure F3MAX, fits Blue Pure 311i Max Air Purifier

Works great and needs replacing every 6-9 months depending on how much your air quality is. I burn wood on a wood stove and have two dogs. So I think it’s great for our space!

Love mine! Use this in my hamsters room and definitely helps with dust and odor. Also we get a lot of forest fires where im from so this is a definite need for those bad days.

Fantastic! It eliminates the idor very quickly and I find my place much more cleaner the air that we are breathing

After about 9 months in out the box with 13% filter life left on the app it was time to replace it. It does a very great job if you vape indoors a lot or have company that do. It will get loud if you want to dissipate the smoke quicker but it’s usually on max for 2 hours to clear out the room. The size is correct to OEM. I hope to see another 9 months before replacement. Remember to clean your pre filter!

Love the air purifier. Very light weight, quiet. Seems effective at removing particulates. We have a large dog…it seems to help with removing doggy smells.