Product review (3 stars): Questionable direct replacement.
This filter is listed as a direct replacement for the Original Equipment Manufacturer and I bought it based upon price and trust.  After installing the new filter, it appears that the flow through the filter is faster, indicating a lower pressure drop.  I truly wonder if this filter is providing the same level or quality of filtering, or it has fewer filter elements or less charcoal.  Flow is directly proportional to the pressure drop.  I probably won't buy this again, as there are no specifications in the product description or on the box regarding the percentage removal of particles, germs, lead, etc.