BLUEAIR Blue Pure 411 Auto, 411, 411+ Genuine Replacement Filter, Particle and Activated Carbon, fits Blue Pure 411 Auto, 411 and 411+ Air Purifiers

This was a lot easier to install than I had thought. A bit on the high side, but I need it. I love the air quality we get from the air filter. And I guess the price isn't that bad. I only have to order this once every 6-8 months.

Working good. I have been using this filter 3years.

I could write a long writeup about this product, but it would be just repeating facts in different ways, over and over again.So here it is. This is a very simple and effective filter that is easy to install and use. Not really sure about the amount of particular it filters out, as I do not have such a system in place to measure air purity. The room it is placed in (the child's room) seems ... peaceful.

These are excellent for filtering indoor air, covers a room very well and removes a lot of dust.

My blueair is going strong after six years and these filters are on auto ship from Amazon. I love them. And the air purifier. These are the only filters I’ve ever tried so I have no comparison, but I have no complaints either.

Shipped flat so have to form it into a cylinder before installing. Install could have been easier.

fits perfectly lasts awhile

Easy to use and is perfect for a small office. Replacement filters are economical. It cleaned up the air within minutes so now I’m not sneezing because dust and stuff.