Where to find this uPVC coupler trim?

[Lamentable]

Hope I've got the right terminology here.

I believe the piece of vertical trim is covers the "coupler" between the window units and the door frame?

Does anyone know the name of this profile and where I could possibly get some?

Thanks in advance.

 

[ronniecabers]

It's a Rehau profile by the looks of it , it is indeed a coupler.
Try Window Widgets or if a local company sells Rehau frames , try asking them

 

[Lamentable]

Thanks for the fast reply.
I should add that the window and door are from two separate manufacturers.
The windows cold be Rehau profile as you mention. However the door was supplied from Rock Door.
I'm not sure what coupler the fitters used unfortunately.

 

[ronniecabers]

Prise the trim off ( if you can ) and then compare it to those window widgets sell, they have fairly good drawings in their downloadable catalogue