We had the unfortunate experience of loosing the toilet window on our 2004 Triton 320GT en route to a campsite, only discovering that it hd gone when we arrived. Can only hope nobody on the road was put in any danger. A temporary repair with tape and plastic film has kept us mobile but our problem is trying to find someone to source and fit a new window. As we are based in East Anglia, so there are no ERIBA dealers on the doorstep. Lowdens in Nottingham are the nearest but say they can't help as their policy is to restrict work to customers who bought caravans from them - at least until next year. So we keep trying.
Any suggestions would be welcomed

Thanks Randa
We lost acrylic window complete with hinges and catches. The widow stay remained but the end had broken off. I think you may be right about it being a standard size. I will check that out. Great to have contact with you.
Bill

We lost a window earlier this year. An email to Jandi resulted in some very helpful advice. Jean ordered a replacement from Hymer at a delivered price far lower than even the cheapest "might fit" second hand item. The replacement arrived and was fitted, the only thing to note is that the modern windows are a different colour to those on a 2006 van if that would bother you.
Jandi worth a try.

Morval Caravans of Hartlebury, Kidderminster.

Found and fitted a new rear window to my Troll. expensive, but not as much as some of the Eriba dealers (if they thought they could get one)
Hymer dealers either quoted silly prices or said the item was not available.

I think these were mentioned a while back, not used them myself https://www.caravancrazy.co.uk/pages/eriba-caravan-windows