Product review (1 stars): they looked like humidifier filters
So okay, they looked like humidifier filters, even said they were built to last longer, lol, longer than what? a day?  I went thru 5 of them in 6 weeks, wasn't even worth the shipping costs, which, by the way, was more expensive than the "filters" (taking liberties with the quotes on this one).  Go to home depot, menards or any other place that sells non-garbage.  The money you save on shipping costs alone will get you a few hundred miles worth of gas.