Re: 2006 Expedition cabin air filter?
I could be wrong, but I do not think your 2006 Expedition utilizes this type filter.
I have a 1998 Expedition and the website you posted indicates I should use the exact same filter for my truck. I have the factory service manuals for my truck and this filter is mentioned nowhere in any of the manuals. Of course, I did go and look inside the truck, underneath the dash and underneath the hood only to find no such filter. Our Expedition is the Eddie Bauer model and I do feel if any model used this filter, it would be the Eddie Bauer. Unless these folks can prove me wrong, no such filter is used on your vehicle!
By the way: Our 2008 Expedition (Eddie Bauer) uses no such filter either. It does, however, have filters located underneath the drivers and passengers front seats. These seats are heated and air conditioned. These filters are round in shape(about 5 inches in diameter) and look nothing like the one displayed in your post