I bought the merv 13 filter, the pleats were smooshed together and not even across the filter and on one of the filters on the side I could see a hole between the side and the filter material. It was big enough for me to put my finger through it. I wouldnt think it would do a good job filtering the air. The price was good but I think you get what you pay for. I dont think I will be ordering again.
I was so glad to find a filter made in the USA. Its good quality, just ever so slightly smaller than my old one. It fits, though and should do the job.