Just put the first new filter in. Finally, a filter that I didn't have to struggle with to put it in. Good value. I didn't have to search for the correct size and price at big stores and it came right to my door.
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?