Product review (3 stars): Should be sold as a pack!!!!
I searched for these replacement filters locally and couldn't find them.  They were exactly what I needed, but  I was disappointed that they weren't sold as a pack as the unit takes two.  The shipping cost was way too high almost as much as the cost of the two filters.  I think that should be taken into consideration buy the company - sell as a pack and lower the shipping cost!  I paid for them, but only because I needed them.  I will try to find them someplace else to avoid the double expense of having to buy two separate items and the excessive shipping costs!