Review on Nordic Pure 20X24X4M12 2 Pleated Condition: Optimal Air Filtration for a Cleaner Environment by Adam Browning

Arrived damaged in a thin, unstructured box unsuitable for shipping. One of the transit passengers sealed most of the damage to the crate with duct tape. If they were for my oven, the filters would be useless; However, they are for a homemade smoke filter and I can repair them well enough for that purpose. Are these really Nordic Pure filters? That's what it says on the packaging, the filters themselves have no meaning at all. Are they really Merv 15? No way to confirm. They look something like this but there are no markings anywhere. There is no repeat order.