FlintarAirMic4S H13 True HEPA Filter Replacement, Compatible with Okaysou AirMic4S Air Purifier, 3-in-1 H13 Grade True HEPA and Activated Carbon Filter Set, 2-Pack

I was slightly worried that this filter wasn’t going to work for my Okaysou AirMic4S, but I decided to take a chance since Amazon offers free return. I am glad I did, the filter is fitting well and working perfectly!It is definitely comparable with the original one and easy to install. The filters are real HEPA and even come with more charcoal pellets than the original filter from the one in the purifier(see the attached image, the left is Flintar and the right is Okaysou).Thus far, the AirMic4S seems to doing a very good job of keeping our air fresh, reducing dust particles and is reasonably quiet. I will continue to buy these filters for my air purifier as they are a better price and doing excellent job.

It's a filter , sure but definitely not hepa not even above quality of plain merve 4 HVAC filter so not even half a poorly made true hepa medical grade by no means! I can see thru light thru every quarter inched space pleat!! And that would be fine if at times a person just wants any filter that fits the airmics,,,,,, if it was at least priced at equal to the quality it is. Six bucks is not worth saving to loose that much quality when it's still almost forty bucks for these if you can afford these you'd be a person wanting the quality hepa and just pay the extrasix bucks for more than double the quality that these are. Should be fifteento twenty no more!

I bought these filters because the Okaysou Mic4 filter was not available until February 20. It is primarily used for respiratory issues. This filter is definitely not up to the quality of the Okaysou filter and is not giving air quality of the Okaysou filter. Will return.

The filter looks like a quality filter but it does not fit an Okaysou. I bought two of the Okaysou Air Filter units from Amazon as well as Okaysou replacement filters. These filters do not allow the chamber to lock. Therefore, you cannot get the unit to work. They are a wee bit too tall. Disappointed. It is a pain in the "you know what" to send things back.

I had high hopes but….the outside filter cover is not removable and is hard. So the actual filter will not work once the cover becomes dirty. This means a shorter life span for the filter.