I'm not so sure these filters work the way they should. After two months of filtering air conditioning, I see very little signs of dirt on the filters yet there is dust on the furniture and other surfaces.
[This review was collected as part of a promotion.] Something changed with these filtersI have buying them for years but the last 2 orders they caused my AC units to freeze and stop coolingI ended up having have 2 different repair companies look at the issueThe 2nd had me change to a different filter and that fixed the issueSo the last 2 filters ended up being very expensive
Held off on a review to see if the filter was going to fold from suction and so far it's holding up great. Two months into the three month interval. Happy with it, and to buy direct, and to buy American.