My side screens were already rather old when I bought my car in 1972. (1956 +4).
They are now literally turning to dust. They are the old type screen with a (crumbling) flap and fixed (scratched) perspexy windows.
I've been looking for an upholsterer who can rebuild them, but they are so basic I think I could do it myself.
However I have looked high and low to try to locate suitable materials, similar to the stuff I've seen on more recent Morgans. But without any success. And no luck with online searches.
It's basically black, waterproof, and a bit rigid.
Can anyone please tell me the name of a suitable material,
.... and also the name of a supplier,
.... and also the best window material for the job?

Thanks in anticipation!
Malcolm