The truck top rail inside measurements are 62 1/2" x 65 1/2". It will fit truck years 2004 - 2014 the F150 supercab and super crew. It may fit others. It has screen sliding side windows, a key lock, inside and outside lights. Good Condition
If you have questions, you may call 785-488-6839.
I also have a trailer brake controller for sale for $40.00.