Product review (2 stars): Not worth having a filter if not a filter that meets the standards of the official filters
This filter is certainly less expensive than the standard filter.  It looks identical to the original in size and shape.  Seems to be of equal build quality.

However, as many others have noticed, it doesn't meet the same standards as the official filters.  It meets standard 42 but not 53.  53 is the one that is the dangerous contaminants.

We are on a well so our water tastes great and has no chlorine taste.  I only care about bacteria.  We already have a sediment filter for particles. Therefore, this filter is useless to me.

If you are going to go to the trouble of having a filter, it might as well be a good one.

Without these reviews, I would have never known it was less than optimal.