Product review (5 stars): Great Filter, Remember to shut off the supply and drain the water from the fridge first.
I was going to give this filter a poor review, when I initially pulled out the old filter and replaced with the Pureline, I had a water leak.  Then I watch a Youtube video on replacing the filter and realized I hadn't turned off the supply and drained the water in the fridge to relieve the pressure prior to installing the filter.  I'm guess this caused an air gap, or some other pressure difference that didn't allow the O-ring to seat correctly.  After turning off the water, draining the water/pressure, removing the old filter, installing the new and turning the water back on, the filer sputtered for a few minutes, then worked great, with no leaks.