I haven't seen their system up close but are you equipped to make your own?
You could either make something from RHS that telescopes inside its self and is pushed up with gas struts.
or
some sort of parallelogram bracket arrangement so the whole awning folds forward and locks down for transport, then when released some struts push it up, aft and hold it there when you want to use it. That would involve the whole thing shunting 400mm though.
or
after a bit of googling, it looks like they have a modified scissor hinge arrangement. If you don't have access to a sheet metal folder, then it would be difficult to make the channels that they have used to put it together and make it look neat...
but,
car wreckers... stay with me here...
get a scissor jack for stuff all, cut it in 1/2 through the base plate and the lifting lug and put 1/2 at each end of your awning. Its very sturdy and shouldn't rattle, lays reasonably flat as it will nest within its self, all the bushes and pivots are already there, its steel so you can weld bits to it and best of all its cheap ($18 delivered on eBay).
The newer shape Ranger/BT50have one that would go close to the height you require.
Using the screw thread would be impractical, but again you could lock it in the up position with gas struts and do a chin up to stow it.
