Product review (3 stars): Filters look cheaper, and they are missing the red indicator strip
I was disappointed that these filters did not ship with the filter replacement indicator.  As these filters never change color or appearance when used, it is hard to remember when to change them.  Obviously, without the indicator, you would change them when you change the water filter.  However, if you have an OEM filter with the indicator, you know that the filter should last longer than the water filter.  That is what my OEM air filter is doing right now.  I just replaced the water filter (after the fridge told me to), but the red line on the air filter indicator suggests that the air filter is still good.