Product review (3 stars): Poor and confusing instructions.
The Good.
Filter appears very similar to old Filter and took just a few seconds to Install.  Good Price.

The Bad:
Instructions on box say "slide the knob onto the end of the new filter".  There is no separate knob to slide on.  I believe the knob they are referring to is already on the filter.  Not sure though.  Perhaps the instructions are for a different filter.

After the installation I found a separate set of instructions inside the box that differ from what is printed outside the box.

The filter had a "timestrip" stuck to the side.  I'm guessing you push the button and it somehow tracks the time to let you know when to change the filter.  Have to guess because there is no mention of this strip in either set of instructions.