Coupling strips for joining UPVC windows

[garyo]

I want to have some french doors with small windows either side, but I don't want these to be full height windows.

I'm going to buy the french doors second hand, but they're difficult to find with small side windows, so I was wondering how universal the aluminium coupling strips are - i.e. do they all tend to be flat 70mm plates and just fit with some screws through the frame, or would I need to find some specific to the french door frame manufacturer's profile and then also find windows of the same profile?

Hopefully my question makes sense!?

Gary

 

[God]

You dont have to use joining strips just screw the door to window and if there is a gap foam it then go buy a length of 25mm d mould for about £3 job done