Cabiclean 4 Pack 211+ Replacement Washable Pre-Filters for Blueair Blue Pure 211+ air Purifier, Removes Pollen, Dust, Pet Dander, Color Include Lunar Rock, Diva Blue, Lavender Purple, Forest Green

Fits our Blue Air well. Like the variety of colours.

I was surprised at how cute they look on the 211+ auto. The original outside pre- filter is made of a hemp like material. I was worried the tighter knit might interfere with process but it seems to work nicely. Maybe it stops more particles from getting in than the loose knit filter? I will change it ad if I notice anything in the fall when I use it more.

They fit on the 211+. Colors, well don't match the decor but as the last ones didn't fit. ( From a different company)

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A little thinner than the originals that came with it but they work fine and no complaints on the price. Another bonuse is that you can change colors from time to time. I haven’t tried to wash one yet (I always just throw the originals in the laundry) but I don’t expect any problems.