Odd filter design – too thin and to big for my masks
My recommendation is to stick with the PM2.5 filters. These filters are way too thin (just one ply) and the design is odd. In addition they are way too big to fit in any one of my over 45 masks. I actually had to fold them in half in order to tuck it into my masks' filter pockets. I would never order this again.
Rating: 2 stars