UPVC Window, door and side panels whipping

[brendanjamesbullen@h]

We've just had a composite door and side panels fitted with a large, angled window directly above. When the door closes the entire unit wobbles / whips really badly. Is there a steel reinforcement product that sits between the units to reinforce available? Thanks

 

[crank39]

Need to see pictures of what you have, any reinforcing bars or couplers need to be factored in at the surveying stage and included in the sizes, highly unlikely to be retrofitted now