Obviously generic filters...nothing on the packaging to guarantee MERV 8 status, air 'passability', necessary flammability status, durability (appear more flimsy than Flanders), etc. I checked off Flanders filters and was referred to these...I would hope they are of the same quality. How do I know?
Filters were great!! You did everything you said you would. It was a pleasure putting them in our furnace without having to crush a little bit all the way around so we could close the door. You have a new steady customer.