Wall supports

They use aluminum rectangular tube studs in the walls that fit into the horizontal top and bottom extruded aluminum wall rails. They are not on 16 inch centers. There is wiring in some parts of the walls that runs in tracks cut into the styrofoam.

Customer service emailed me a pdf file drawing showing where the studs/rails and metal backing plates in the walls are.
The plates are where cabinets and heavy items are screwed to walls and ceilings.

Unless what you want to hang is very heavy, consider using Dometic Oscar rivets and not worrying about the studs.

You can use a stud finder. Inside wall joints are joined together usually on a stud. You can also tell by tapping on the walls, and can hear a difference when you hit a stud.

X2 on the stud finder. Works just like in the S&B :)

Look for very small staples.

You can also observe and measure the morning dew lines on the outside and transfer those measurements to the inside. Measure twice, drill once.

WDW.BWV wrote:
We want to add some shelving (wire rack) in our lav. How do you identify where the struts/ wall frame members run vertical? In a house 16" OC is the rule. This would be in a new Winnebago Trend23L

Just like in your house you'd use a stud finder, that would be a good place to start. Note that RVs are constructed differently from houses so expectations should vary. In addition to a stud finder, tapping on the wall is also useful in locating solid spots where structural members might be located.