Product review (5 stars): Great Product.  3 for the price of 2
This is the second time I ordered a box of 3.  I have two air handlers in my home.  I replace the filters once a year.  Previously I bough two from a local suplier.  These three cost less than I paid for the old pairs, so every 3 years I feel I am getting a set for free.  I see no reason hy I will not continue ordering them in the future.