Review on Smilyan 3 Pack Pure 411 Replacement Filter for Blueair Blue Pure 411 411+ and Mini Air Purifier with Activated Carbon Filters by Andrew Agarwal

When I compared the original manufacturer's BlueAir Pure 411 filter, this filter is EXACTLY THE SAME, the only difference being that it is branded. , it is EXACTLY like this one except for the brand label. People who claim it doesn't fit probably had an issue with the "internal carbon filter" not stretching properly. I have over 5 BlueAir Pure 411 air purifiers and am so glad the general purpose filter is available at such a great price. If you have experience with changing filters, you will understand what I am talking about, and if not, it is probably time to start saving filters. They definitely fit the 411 Pure, just put them on and you don't even see the filter with the pre-filter attached!