Cost of shipping a dimensional object wide makes this something to make on site. A roll bender, 2 steel pipe and 6 pvc pipe are the main materials. The larger the diameter the higher the yield in the area.
If you have the wall space in your RV gain two extra sleeping spots, with this space saving Bunk Bed Gadget. I'm thinking wall in garage of toy hauler RV separating living area. Or a great opion for a small bedroom for brothers or sisters!