Hi John !
Thank you for your reply,
You're right because the bottom frame is the same than the top but the system was removed for sure...
Pics of the top :
And of the bottom :
I've seen the link and it's exactly these part I'm looking for, I have to do a good order again to Steve from VTS,
I'll replace all my windows by pleaxiglass (Lexan) in 3mm of thickness and for the jalousie windows, I'll keep glasses, it have 5 glasses for the top jalousie system and 5 for the bottom and at the moment, I have 4 glasses on th top.
I'll remove one piece in order to make 10 new glasses by a glass specialist.
Yes, I've seen you have regular glasses on your Overlander when you bought it
Thank you again John,