We have a 29LE BHBS Wildwood
We tried to have dealer install, even they it was agreed in sale contract, the owner later felt they didnt have enough info to install and that they didnt know if the TT had been blocked for a ladder.
I worked closely with FR and a different dealer to have a ladder installed. FR stressed that the ladder needed to be purchesed from FR and that it must match the model TT bought. Even with all this info and effort, even after I was told by FR that the TT was framed internally, the ladder isn as good as if installed from factory. after all this stated, i would discourage tryng to install, but if you do, make sure you talk to FR, get drawings, buy their ladder, make sure it is blocked from factory, etc.
We have used the ladder, but we will still also use our telescoping ladder for most of the roof access ound the top of the slides and awning, it is very strong having a 300 pd capacity
hope this helps
2008 Wildwood LE 29BHBS