Help me understand

edhensley wrote:
At some point you will take out the back window of your truck

Then you will have full understanding. It only ever gets used in very tight RV parks

But this is the reason for my inquiry! If I have to turn that sharp, then I shouldn't be in that spot and at the sharp angle, you no longer can maneuver the rv. And this is how window get broke out. I drove the big rigs at one time and never put a trailer in that kind of a position. And yes there were tight spots I hauled heavy construction equipment. As some one replied, that if you have the 5 ft box like Fords have Im told, A slider is required.