Why not call your dealer explaining the delay in ordering and asking for a measurement? If your salesman is too busy to measure or return your call you could try leaving a message asking for someone else to call you...
Great choice for "Living within my means" and camping for one...
2011 Salem Cruise Lite 20RBXL & 2011 Toyota Tundra Dbl Cab
Camping History: 45 Trips / 133 Nights / 3736 Miles
FRF Social Group: Campers of the West