If you counted all of them, it would be:
Windshield -- 2
Wing windows -- 2
Roll-up door windows -- 2
Corner Windows -- 2
Rear Window -- 1
Total of 9
But windshield and wing windows typically aren't counted when we talk about 3 window versus 5 window. So a cab without corner windows would be a 3-window, and one with corner windows would be a 5-window.
