Myabe the dealer can just recommend a glass shop that will work on RV's.
Remove the window and take it to the glass shop. Let them deal with the measurements.
They have to install the new glass so they will need it anyway.
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'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
Amateur Radio: KD2IAT (146.520) GMRS: WQPG808 (462.675 TPL 141.3)
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