Review on VEVA Precut Premium Carbon Pre Filters 4 Pack for HPA300 HW Air Purifier - Easy Installation & Advanced Filtration by Ben Demers

I've read some reviews and seen pictures they don't fit and almost returned them but I think I figured out what's going on. So my first attempt to install them in my HPA300 was obvious. the gap between the frame and the filter where the HEPA filters are clearly visible. When I put the Honeywell filter next to the Veva filter I was stumped, they are exactly the same size, why am I seeing a gap? I think this is because they are sent folded. After I folded the filter in the opposite direction to work out the crease, it fit perfectly with no gaps. Use Velcro to keep it in shape so the filter doesn't collapse on its own. I'm actually thinking about adding a few more things to support this filter. I would have preferred them delivered unfolded but for the money I saved it's worth it. They feel just as strong and thick as the one that came with my cleaner.