Product review (4 stars): All about saving money
At $35.00 plus tax at the hardware store I could not justify replacing these every 6 months as recommended.  From this vendor at half that price it's a lot easier to justify.  Identical product and fast shipping.  There may be a slight issue with proper fit so be sure to tighten the newly installed filter until it's snug or it won't work right and you may have a mess (water)in your fridge.  I'm not sure if this was my error or a design flaw or a little bit of both but once I figured out that was the problem the filter worked fine.