Where exactly is the cabin air filter on a 2010 Ford Focus SEL? The owners manual is silent on this?

Where exactly is the cabin air filter on a 2010 Ford Focus SEL? The owners manual is silent on this?!

Passenger side under cowl vent grill… Turn wipers on, turn key off to stop blades up on the windshield, open hood, see that plastic rectangular shape under the plastic vent grill on top of firewall… Remove everything in the way pry out old put in new… Reassemble. Some firsttimers claim 4 hours start to finish… It might be in the maintenance supplement that came in the folder with warranty info… Good luck.

Where exactly is the cabin air filter on a 2010 Ford f150? The owners manual is silent on this?!