REYEE AC4151 AC4153 AC4154 filter kit for Philips AC4372 AC4373 AC4375 air purifier parts HEPA Filters

I've purchased these through Amazon twice now and both times received the three filters as described. I don't have the scientific knowledge or tools to confirm whether they do exactly what the genuine Philips replacement filters do. At least for now, Philips doesn't seem to want to sell the necessary replacement spares for many of its products internationally, which I found shockingly disappointing for a brand that gives the superficial impression of being global yet disavows knowledge and support of its branded products across national boundaries. So, for now, these are the only replacements available to me since I decline to send to landfill a perfectly good machine that I paid a lot for and still is very valuable to me, living as I do somewhere that often has air quality that's poor as judged by the World Health Organisation.Whilst I can't give a categorical assurance, I can report that on unwrapping and then in use all three filters look (to my eye) and behave (to my respiratory system) exactly the same as Philips branded filters. They don't come in Philips cardboard boxes of course; indeed there's no mention of Philips anywhere on them but they do come individually sealed in plastic and the details are so remarkably identical down to small details that my strong belief is these are in fact the exact same thing, most likely from the same production line just not marketed in Philips boxes.