Product review (1 stars): Not The Correct Type/Poorly Crafted
I bought these filters last year from a local store, and they worked like a champ.  Purchased the same filters this year through the Amazon marketplace, and they are not same quality (apparently same manufacturer, i.e., Essick Air HDC-12).  This year's model is irregularly shaped and there are strips of glue on both sides of the filter; last year's model had strips of glue on only one side so the filter could bend to the proper shape.  I would return this filter if I could, but I am out of the return period.  Very unhappy customer.