Product review (5 stars): Reorder of a satisfied customer.
This was a reorder.  I've used two of these for the last 2 changes.  Seem to work very well and last a long time.  Lasted longer that the expensive GE filters I had been using.  I assume they were just as effective.  Certainly nothing noticeable.  The sensing unit indicated a change was needed and I assume this is a result of flow issues in the filters.  So it got the stuff out.  I'll continue to use these.