What most naturally follows?

How to change the cabin filter in a 2003 ford taurus 
The cabin filter is not unlike the standard air filters you replace regularly. 
The difference is that this one is a bit thinner/smaller. 
Locate the passenger side cowl.
In plain english, this is the plastic piece just below where your window wipers sit when they are at rest. There are two " cowls " one on the driver side, one on the passenger side.