This is my second purchase of this size. I have no complaints. They are definitely well priced because when you divide the cost by the quantity you pay the same as store bought cheaper non-merv filters. For me it's a no-brainer, win/win. My sons and husband have allergies, we have 2 different breeds of dogs and we live in Florida and they work better than the more expensive store brands. Even when it comes to lighting my candles. The hallmarks I noticed still caused soot to settle on my walls around the picture frames. This has completely stopped since I started buying them with my chosen Merv rating; I learned the required Merv rating. I still have to change them monthly during the warmer months. I will keep buying them until I can upgrade to a higher Merv.
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