I couldn't find any on the site and emailed to see if they were still available. Unfortunately my set is pretty old and not really 'supported' in current range. But I have to say Wayne from Battle Systems was awesome.
At 15mm, with the external walls in, the Battle Systems stuff looks like awesome hangers.
For 25mm, more of the Battle Systems interior goodies can be used.
And a heavy hover tank to boot, inside the vehicle bay, awaiting a final spraying of paint.
Mostly happy with how the walls came out, some of the gates didn't quite fit together as expected, but should make for a lot more interesting gaming.