Loose Grab Handle

I kind of hate to say this but toggle bolts really suck for very thin walls. They require a really big hole in the wall in comparison to the screw in them. They will hold well but there are a couple of better choices.

I would bet that the screws used to hold the handle are no bigger than #10 and the total skin thickness is no more than 3/16". A product made specifically for thin brittle materials are Jack Nuts. The whole required to install them is as large or larger than a comparable toggle but when finished the whole will be just slightly larger than the screw used to hold the handle.

A very similar item would be a Molly Bolt.

Both can be installed easily in foam filled walls, while Toggle Bolts are somewhat difficult.

I sure wouldn't want to trust any weight on something as discribed above. Nothing in the wall to support it is an accident waiting to happen.

This may take some doing
Drill all the way through to the inside
Lay a metal plate on the inside and drill it as well
Use not screws but BOLTS just long enough to go through the wall and a bit more
Use "CAP" style nuts and flat washers on the bolts

Seal the handle to the outside wall to prevent moisture entry

lostbytes wrote:
If using those toggle bolts. You might have to snip those expanding ends to get into that narrow wall. Those toggle bolts are made for 2" regular homes where as the RV walls are 1"-1 1/2".

2" walls in regular homes?

Remove the handle, take a drill bit and mark it with a piece of tape so you don't penetrate the interior. Drill out the holes and rout the bit around at an angle, creating a cone in the interior foam. Inject some epoxy, power grab, liquid nails etc into the holes, then reinstall the handle after it has cured.

If using those toggle bolts. You might have to snip those expanding ends to get into that narrow wall. Those toggle bolts are made for 2" regular homes where as the RV walls are 1"-1 1/2".

Need to use the metal types toggle bolts. Providing there isn't any supporting wood in wall. Need deep scanning stud scanner on inside of unit wall to use to find out. Sometimes just knocking will give you a hint of something solid between the outter and inside of wall. If by door. Are you able to get behind frame of door to see?