Product review (5 stars): Found a Match!
I don't usually write reviews for such an inane item, but I definitely felt I had to after such a long search.  I never thought I would be spending so much time on microwave filter replacements, but there is no standard size you can just find in a big box store.  No part numbers or names are listed on the old ones, so I was stuck reading endless reviews and checking dimensions before I rolled the dice with these.  It is exact match to the old ratty set that was installed below my Frigidaire microwave when I bought my condo.  The Vendor: Air Filter Factory, put a lot of care in ensuring these filters kept straight and in perfect condition.  Never thought I would be so pleased seeing something like this installed.