Twyla and I figured out how to put together this germ chamber all on our own, with the help of a hammer and chair of course. I know all it looks like now is a "pre-fab shelf unit," but this baby will be keeping seedlings warm and cozy come spring time. We got a little excited and built it ahead of time.
Check out the Home Depot for steel shelving units. Ours is 72 inches high X 48 inches wide X 24 inches deep, for only $76.97. Any other sturdy shelving unit will do, size just depends on how many trays you want it to hold (usually trays are 2 ft X 4 ft).
Next we'll be heading back to the store to pick up some lights and fixtures, as well as reflective cardboard for the outside of the chamber. I'm also going to post some information compiled by John Biernbaum on choosing lights and fixtures.