Product review (5 stars): Great filters, even better price
These filters work well, at a great price.  They fit in my fridge without any problems or leaks.  They operate like all other carbon filters, having to flush the line for a bit to get rid of all the loose carbon, but then the water is clear and in my opinion, fresh and odorless.  If you are wondering about the buy 3 get one free, just add 3 to your cart and a 4th will be put for free in the box.  I always appreciate companies that provide equal products at much cheaper prices, as well as provide good customer service (they followed up with me after my purchase).  I highly recommend buying these.