I agree with Illapah. I installed a standard 13500 dometic. If it comes off then so do my vent cover.I have measured and I am not over 13'. I believer most interstates are 14' plus.
Two seven foot poles in pickup goes together, whenever in doub, check the height.
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2021 GMC 3500HD Dually
2019 3790RD Legacy
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