So I decided to build an enclosure into a spare closet I have down in my "man cave". I spent the first weekend running the electrical wiring and installing the ventilation system. Then I shot insulation into the surrounding walls and ceiling. Finally, I constructed the actual enclosure into the closet space, about 4' above the floor. Under the enclosure is a small pull-out prep table that I use for maintaining the enclosure. I finished up the enclosure by installing two sliding plexiglass doors on the front, and then insulating the top and bottom with 1/2" styrofoam. MUCH easier to regulate and control the temps and humidity now. I've achieved my daytime high and nighttime low goals. The whole thing measures 60" x 29" x 12". Getting ready to add more plants this coming weekend. Should look really nice then. Little guy seems to enjoy it!