Last year at the first FROG Rally in Branson, MO. someone locked the keys inside the trailer. We started around ...all of us in the group and I think the 6th or 8th key worked.....So maybe not absolutely universal.....but not too many different combinations out there.
Glad you able to get in the window and at least save a locksmith call.
2011 FORD F350 CREW CAB DUALLY DIESEL 4x2
2010 Salem LA 292FKDS
One of the Original 14 F.R.O.G.s
1st INTERNATIONAL F.R.O.G. RALLY Branson. MO.
2nd and 3rd INTERNATIONAL RALLY Goshen, IN.