Product review (5 stars): CLEAN WATER
I buy these for my Samsun fridge.  There are other less expensive off brands but none of them provide a detail description of the toxins they remove, so I have to assume that a lack of a descriiption from the off-brands means they do not work as well as these.  For the $20 difference, I'd rather not take that risk and end up with bad water for my famly and I.