True HEPA 14 Replacement Filter Compatible with Puroair 400 Air Purifier, 3-in-1 H14 Filters with Activated Carbon, HP-14 Filter Replacement, 2 Pack

This wasn't what I was look for

I was overdue on changing filters in my Puroair 400 by probably a good 2-3 weeks. I kept putting it off until I recognized that I was waking up congested. I find myself fighting a runny nose and sneezing throughout the day if I'm outside working. I was starting to experience this in the house as well. I find that the older I get, the more sensitive my lungs have become, so what I probably didn't notice all that much 20 years ago, has become a bigger issue in this leg of my journey. These arrived yesterday and I popped them in. This morning I woke up much less congested. There is a lightness to the air as well. You don't really pay much attention to things like that until the air hasn't been filtered for a few days. I don't know much about measuring an OEM filter against another manufacturer's version of the same filter. My experiences are based more on the quality of the filter to improve my breathing experience and this one does the job. So far, so good.