If ya don't have any luck with Little Guy, Steve ...
... you can always make your own using radiused-corner baggage-door frames, 1/4" Lexan (or Plexi), some shower-door welting, a radiused-corner slider window, and an RV latch. Check out my LB10RF on my Plans Page -
www.teardrops.net/LilBear/plans.html
I've also got something a little more appropriate in the works, but no promisses right now ... just stay tuned, as they say ... ;-} ;-} ...!
CHEERS!
Grant