PM received and replied to:
This is what I use in the shop, decent metal and decent fit.
Best to give the inside a coat of anti rust so as to get longevity, also you will have to cut out the small rectangular hole for the light fitment.
https://www.ebay.co.uk/itm/333522267599?hash=item4da779edcf:g:YBQAAOSwXZVhP1Px
https://www.ebay.co.uk/itm/223922680013?hash=item3422d4f0cd:g:5ycAAOSwduhhP1Px
Or if you prefer OEM then just give Torqen a shout.