Were it me, I'd just use a single adjustable tent pole outside, with a foot on it to keep it from sinking. You're only trying to keep 50-60 lbs from tipping, not support a safe.
Here's how one of the Yahoo Scampers does it with crank-out windows
As stated several times, it is a 5 minute job to install it. There are two
screws on each end of the bottom window. When they are removed, the window lifts
off. The top window stays in place and when cranked out comes out to the edge of
the little 5k Fedders and protects from rain etc. A single six inch by 1/2 inch
width of the window is held on the top flange of the A/C unit with a single
A/C unit leans against the board and no other support is used to hold it in
strips of foam rubber is stuffed in the edges and the unit is plugged in at the
on the end of the sink cabinet. BTW, this is the installation shown in Scamp's
brochure and it is so simple and works just super today. Please note that crank
And here's how he does it with sliding windows:
Here is a quick and easy way to have A/C in the rear sliding windows.
On my 1992 S19 Deluxe, I had no air so here is how I set a 5000 BTU
unit in the rear sliding window: Took less than an hour.
The window is set to open about 15 inches and 17.5 inches are needed.
There is a stop in the upper left hand corner of the window that is held
in with a single phillips head screw. Remove that.
Then get your Dermal tool and several cut off discs (they brake easily).
Go outside and cut about 1/4 to 1/2 inch off the top of the center flange
that touches the top rounded window frame and keeps it from opening
all the way. Be careful to not cut the class as you go.
I now have 17.5" window opening. The A/C is 17.5 inches wide and still
won't go in the window, so I removed the A/c case and it fits fine. It's
a 99$ A/C unit so modifying the case gives me no heart burn.
Now I open the window set the A/C in the window, plug it in turn it
on and one more cool Scamp
. Remove A/C unit, set it in the floor,
close the window and I'm ready to go. Even easier than the crank