LifeSupplyUSA Air Purifier Filters Compatible with BlueairAll 500/600 Series SmokeStop 500 600 501 503 550E 601 603 650E

these are pretty good, i enjoyd the pure burg ones better but i couldn't find them this time still way better than paying out the yin yang for blueair brand tho

No need to acquire the expensive brand when this works just as well!

These work great and the price was very affordable.

This works perfect

I'm using This filters for a couple of yearsI think they are very good and I would recommend anybody who has blue air Purifier

Great, pricey though

With a new smoker neighbor living in the condo next to me my need for smoke and allergy relief changed. The proof is in the putting, did they help my allergies? These filters worked wonderfully, I finally woke up this morning and can breathe in my own home.With these filters installed there is a harmonic whistle or hum with the fan on high, some of the time. For half of the price of the name brand I can't even hear it.. I've gone through 2 sets of name brand Blueair particle filters, they don't work for smoke. I would say they look medical grade quality. I have been dying the last couple weeks with difficulty breathing, chest pain, sinus pain and congestion. Thank God these filters arrived yesterday, very heavy and looked high quality

These have the black front, am fond of the OEM, so they don't show through the grill. Much better than other filters I had ordered through the marketplace for the same system. These also have the charcoal filter which similarly priced alternatives didn't. Very happy with this get.