I have my old trusty 12” flight case. It’s a bit dusty from storage and the carpet inside could do with glueing back down in the lid, but it’s still up to the job of protecting your records. 22cm deep for you to work out how many can fit inside, I’ve not used it for ages so can’t remember how many I used to be able to fit. Any questions just ask. U.K. shipping only. Thanks
eBay