I would think there are solid wood members that ETI uses to attach the the exterior door frame.
Here's our first build picture from late March of 2017. You can see some wood framing near the door, but the angle makes it difficult to see the precise location of the wood reinforcement clearly.
Gary
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Gary & Linda
2017 Escape 21 (April 04, 2017 )
2015 Nissan Pathfinder
Trailer: "The Trailer", 2nd Gen 21' & a 2017 Tundra CrewMax in Blazing Blue Pearl
Posts: 2,888
Aren't there stand-alone steps with a railing on it? I'd look into that. A lot of folks have problems with the single step anyway and feel they need two.
I'd never use a suction mount device for anywhere I needed to know I was gonna have support/strength when I needed it.
Was looking at a Bigfoot a few weeks ago just to see what it was like in person. Dang, I really liked their steps!
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Laura, Dirk and Sam & Jasper (the cats) www.UnderKittySupervision.com
2017 21' trailer, new mold, rec'd 11/25/16
If you put one of those folding grab rails on the trailer, remember to fold it in when you head out. I chased a trailer that left Bolding Mill Campground this morning flashing lights, etc. Finally reached a place where he could pull over & fold it in. Watched it come within inches of mailboxes & roadsigns...