86 and up the window size changed on the sliding door .  Seals are the same with whatever type of window is in the opening , be it stationary , 50 /50 or. 70/30 . I know not why there would be a difference. 
     

                              Stacy 

                       Vanagonsplus.com

      Happily Married since 1986 . 

> On Jul 4, 2014, at 17:36, Mike Holm Toronto <mike@BOSSSOLAR.COM> wrote:
> 
> 
> I'm in the process of repainting the van which is not a westy but has sliding windows. I'm not sure what window seal set to buy as the choice is between westy type and non westy type. What is the difference? Are there different types of sliding windows on late model vans?
> 
> Cheers,
> 
> Mike