Cabin air filter

I just bought a 99 Tracker 2door 4wd 2.0L 5speed. I was doing the routine used car stuff, oil change new air filter etc. and saw a listing for a cabin air filter. I know they are usually behind the glove box, but I took it out and could not find it:shakehead . Just wondering if all Trackers have them or if it is an option or if it is located somewhere else. Any help is greatly appreciated.
Thanks.

Never mind i found it. there wasn't one installed. ordered from advance auto and installed it after cleaning paper out of the housing. Just in case anyone is wondering it is behind the glove box.