- Hi
If the wooden surround is still in place on the metal frame you could easyly put a new wood veneer trim on it like this:
https://www.ebay.de/itm/264966647721 (google search)
I’m not the seller or something like this.
This veneer has a paper laminatet backside, is easy to cut with a sharp knife.
As glue you could use a kontact cement like Pat..x.
Sanding the edges with 180 -320 grid.
Spray with semi matte clear coat and enjoy the new look.
Regards
Christian