IMPRESA 3 Pack 211 Replacement Pre-Filters - Compatible with Blueair Blue Pure 211+ Air Purifier Filter - Lunar Rock Gray Fabric - Washable Slip-On Slip-Off Design & Extended Main Filter Life

They fit perfect on my machine exactly as advertised I like having a few of them so that I can switch them out easy to clean adorable good material breathable for the machine.

Was happy to find these pre-filters in a nice neutral shade. They are made of a good quality material and easy to clean.

fits the air purifier just like the original. Seems as good quality with a much better price!

I'm not a fan of how cheap these look, but they were very easy to install. I'll know in 3 months how well they work.

These fit perfectly it’s just like having the original on. They collect dust as they should. Great value for the price.

I have bought these before from this seller and they were fine. But these are too small in width and height. The picture shows it stretched so tight it started to tear and still only came up about 75% of the way. All 3 in the package were the same size. They also seemed a bit thinner than the previous ones. Too late to return these, but don't buy them unless you're prepared to take a chance or try them out immediately.

I have bought these three times and gave the first package a five. But the third package is slightly too small for my Bluair 211 air purifier. I have to really pull trying to get it around the filter and it still won't completely reach to the bottom on all sides. Question: Why was a good product made less effective? How can I find one like the first one I purchased in the past?

You should change the cloth filter at least every 3-4 weeks. I have animals and it prevents the animals hair frim getting into the main filter causing me to change the charcoal filter more often. It is good quality. Was the cloth filter in cold water and hang dry. Do not put it in the dryer. Buy a few so when you wash the cloth filter, while you wait for the ones you washed to dry, you can put a clean cloth filter on to continue to have a clean cloth filter on. Again, do not put the cloth filter into the dryer.

good

Pour mon purificateur d'air Blue pure 211+ Un peu plus petit que celui d'origine mais s'étire finalement.

I used the product for the purpose it was made for and it was easy to put on.

Fits the unit I would say 95% well. I hair on the short side. I haven't washed on yet, but if they shrink then it might be an issue.

These filters will only barely fit. They have a tendency to ride up so you have to keep an eye on them. Not having good coverage of the carbon filter will reduce its life.