The filters are blue and they are ink marked as Merv 13. However, they could have been other Mervs labeled Merv 13s.I dont know. I couldnt tell. Totally unsatisfactory.
And before you know it, your filters are at your house. Seriously I needed some strange sized filters and this was the easiest and most Cost-effective way to do it. I recommend them.
These filters are exactly what I need. I buy the higher MERV air filters because I have allergies and need all pollen and pet dandruff filtered and my wife likes to burn candles, so it is nice to have the soot and particles removed as well. I will definitely be back for a resupply.