Moonlight hatches

[TNT]

Hi all, we have two 500mm lowline moonlight hatches fitted that are 20yrs old, one in the saloon and one in theforward V, I have managed to get replacement seals from eagle boat windows in the UK but I need the trim that fits around the inner part of the cutout to finnish off between the saloon roof and the edge of the hatch, its basically a plastic an edging strip at 90 degrees that goes around the window and roof........anyone any ideas where it can be bought from without having to get it specially made.

thanks in advance