Product review (5 stars): Good unit...works perfect
Many people say this is not the same size, however if you read the manual you can clearly see why. They use a different manufacturing process which allows them to save on the size of the filter and increasing the life span of the filter by creating a vortex on the inside, the size may seem smaller but it works fine. I've been using mine for 7 months now...no problems. Still going strong.