Metal strips on exterior walls?

Texas Couple

i am just curious, we have all of the drywall torn out of our singlewide mobile home, and all of the insulation so we can work on wiring. I noticed yesterday that every six feet or so, there is a metal strip that runs from ceiling to floor along the exterior walls. These strips are approximately six inches wide and do not seem to be supporting anything, as they are quite loose. They are firmly attached at the ceiling, and at the floor so it doesnt come out, but you can shake it with just a bare hand. They do not extend below the bottom of the trailer. What could they be?
I am positive they are not hurricane straps. My parents' mobile home has hurricane straps, and they are tighter and thinner than these things.

Seattle2k

Can you attach some pictures?

gregzoll

If attached to the metal frame, they are there for when they truck them from the factory to the site, and also act as a bonding strap from one side to the other. It really depends on the age of the unit, and the factory that manufactured it.

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