It appears "CA" for Fram doesn't mean "Cabin"

[simple_gifts]

Consulted the filter lookup guide for my prius and big book said 10159; Looked on the shelf and it only had CA10159 so I figured that was a cabin filter.

Poke around a bit more and reinspected the box and it was in fact an air filter.

$13 and 30 seconds later.

This i believe is an STP air filter; mileage unknown but does it really matter?

 

[Hall]

There's little if any logic in Fram's p/n system, at least with air filters. The exception could be (1) variation of their cabin air filters that start with "CF", i.e. Cabin Filter.

 

[Passport1]

That looks like debris from a hybrid eastern Australian grey squirrel.

 

[Escape08]

That cloth thingie and fiberglass insulation on the cabin filter looks like it came off from your car.

 

[brianl703]

Fram air filter part numbers have started with CA for as long as I can remember, back into the mid-90s.

 

[oldhp]

We have "lots" of squirrels here. I put 1/2" wire mesh over the air tube fender inlet in all my stuff. One less furry waste thing to worry about.