Review on Fette Filter - Premium True HEPA Replacement Filter for Winix Air Purifiers Model # 5500-2 & AM80 - 2 HEPA Filters + 2 Carbon Filters by Kevin Pirlet

I'm only giving two stars because although they were easy to install I missed the plasma screen (there should be two) so I had to use the old one for mine air purifier above. Also, the lower unit air cleaner filter that we completely replaced has stopped working since the replacement. It's either defective or I'm not sure what happened but since we installed one of these replacement filters our unit has stopped working properly and it is the correct filter replacement.