Thanks all for the warm welcome. I have already built one enclosure, but was unaware at the time. It started life as a tv cabinet. Wife wants to take it over. I actually built a whole setup when I was still a cabinet maker. It was a full wall enclosure about 25 foot wide. I don't remember how many individual enclosures it contained, but it had routed in areas for heat tape, cased boxes for humidity and heat controls and weighed a lot.