Theres no way to really know if the filters are MERV13 or not. No markings on the filter, just a slip of paper in the 4 pack. I expected the filters to be more rigid. Some of the cardboard framing was crushed, affecting the filters rigidity. Regarding performance, the jury is still out.
My furnace was listed as one that would use this size, and it was slightly too wide. The service man doing the six month check suggested the Honeywell brand would fit better. I used the smaller size previously and, while it would fit in, it rattled a lot. The rating would change if the 5 inch had fit.
While the filters appear to be of good quality, the size difference vs other ones we have purchased from other companies in this size is almost too small to cover the opening. Had to adjust a few times to stop the whistling.
Am renovating kitchen so have quite a disruption in household. Have not cleaned a lot in last two weeks. There is a noted difference in dust accumulating. Much , much less dust. I think it is due to the filter I put in my ac. Your filter . So far , so good. Thanks!
Had used Filterbuy before and liked their quality. Now that I'm back home in AL and they're literally coming from 15 miles away... No brainer. Great filters and support hometown people. It's a win win