End cap for Walkthrough window

[Marc 240 Sundeck]

Good day everybody, my name is Marc and I own a 2006 Sea Ray Sundeck. Does anybody know where I could buy the end caps for the aluminium frame of the Walktrough window (see Photos attached)? In Germany where I live I have nit been able to find these pieces.
Many thanks in advance for your help!

 

[techmitch]

@Lazy Daze may be able to help. Hopefully he will chime in.