I posted this in another thread but I might just as well post it in here too:
I was wondering what the best (i.e. cheapest) case would be for an Onda D1800 with 6 GPUs on it... It would need to fit the PSU as well I reckon. Don't want to splash out too much cash, but I'm thinking of moving this open-air rig to another place so I need it properly secured. I'm guessing some type of 4U case should work...?
best bet is check aliexpress, and ebay.... you should be able to search of "onda 1800 case" and find results.
Or; See if spotwood's open air frame would be in the price range and liking to you. I personally bought his frame for my D8P and it was one of the best decisions i've made for that machine.