2-Pack H05 True HEPA Replacement Filter Compatible with HIMOX H05 Purifier Only, 3-in-1 Filtration Filter

They do the thing. They fit my himox purifier!

the pre-filter is just a giant sponge block. You would spend more money trying to replace these every few weeks than getting the original. The actual filtration rating of these are also unknown

These filters look identical to the OEM filters including the dimensions. They fit perfectly in the air cleaner and it appears to work the same as the OEM filter as well. So far, I will save the money and buy these in the future.An update on these filters- they might not have the same charcoal material as the OEM filters. When I swapped out the OEM filters before, I never smelled cigarette odors in my room. The air purifier tells me when to change the filter but so far the light is still either green or blue so it's not time to replace the aftermarket filter but I can smell pretty strong cigarette odors in my room (700 sq ft garage). Try them if you wish, I won't risk the $$ savings in the future.