These filters are advertised and labeled as MERV-13 but I would really like to see confirmation of that rating. I'm very sensitive to airborne particles and pollution to the point that if I don't have a MERV-12 or higher I'll get a sinus infection. Since switching to these filters a week ago I have been blown away and so has my dog! Yesterday I switched back to FILTRETE MERV-12 and what do you know. everything went back to normal. Also, the packaging is terrible. The filters are single wrapped rather than individually wrapped to prevent dust and bacteria from entering the filters during shipping. We're working on processing the refund as we speak.
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