Review on 2-Pack Membrane Solutions Reverse Osmosis Membrane 50 GPD 1.8"x12" Water Filter Replacement for Under Sink RO Drinking Water Purifier System by Mark Jefferson

I was having trouble finding this particular filter for my five stage reverse osmosis underwater filtration system. This filter may not fit exactly, but as I said, the filter arrived very quickly. I have previously replaced the sediment filter, carbon filter, activated carbon filter and reverse osmosis membrane in my filter, I installed this filter, put everything back together, the system worked perfectly and now my water is fresh and tasty, and I received an email from the salesman who wanted to make sure my filters were fine and asked me to tell him. What kind of filtering system did I have in place so they could update their records and maybe help other people which I thought was pretty normal. Thanks again.