The telescopic ladders are great, until the damage they cause by leaning against the side destroys paint, plastic, fiberglass, roof material, or the gutter channel. And, you really don't want to see what happens if you lean against the front or rear cap.
They were designed for residential use, not RVs.
Kinda of odd then that they sell them at every rv supply store I've ever been in & if you're leaning it against the front cap or unprotected against the paint maybe shouldn't buy the ladder or be doing your own repairs. Just my .02 cents!
Danny & Linda
Sold our '13 Thor Redwood 36 FB
Currently RV & truckless