I have a couple of ETS-Lindgren Model T/T Table Top Copper Shielded EMI/RFI Enclosures for sale. Probably a bit pricey for hobbyist use but if your company is looking for shield boxes for a fraction of the price of new ones, please check out my Craiglist ad:
https://vancouver.craigslist.org/rch/ele/d/richmond-lindgren-table-top-copper/7074353802.html
I’ll knock a hundred buck off for a VHS member.