You mean this type Eric?  

https://shufti.blog/2011/11/17/vanagon-sliding-window-rain-screen-improved/

Alistair 

> On Feb 4, 2020, at 7:57 AM, Eric Caron <ericcaron96@comcast.net> wrote:
> 
> Hi tom,
> 
>        I kept this on list in case others are interested.
> 
> Years ago you gave me the measurements for the flexible plexiglass glass inserts that can be used on the outside of a vanagon side window to let air in and keep rain out. 
> 
> I lost them.  Can you send again?
> 
> I had given up as the price of plexiglass glass locally was crazy. 
> 
> But, I have two sheets that were left at my new house.  So I’m thinking I would like to make a set. 
> 
> I need the full rectangular measurement and then the measurement of the bottom from start of the half circle over.
> 
> I remember how they look and could probably create them but yours have the perfect fit so I’d like the measurements.
> 
> 
> Thanks!
> 
> Eric Caron 
> 85 GL Auto