I figured I would post this. This is a link to the greenhouse company that sold me my greenhouse (www.conleys.com) mine was a Conleys Hobby House, residential structure, that is a 12 by 12. For about the price of a pair of Parsons I think this greenhouse was good deal. The greenhouse has got to be heated in northern areas for a couple months out of the year, however can produce year round desired conditions (high humidity, light intensity, temperature (on a thermostat and is capable of low and high temperatures) and extra greenery) that not many reptile rooms can match. Plus all the reptiles and insects are out of the main house. Conely charges a small fortune for installation (about the same price as the greenhouse itself), however, if your handy enough you could assemble the greenhouse yourself. Plus swamp cooler and pro pain heaters are separate. The only major problem is producing UV rays for reptile requirements that I'm attempting to solve. If worse came to worse I could just hand water the chameleons and greenhouse (for humidity) then put Zoo Med 10.0 tubes over all the cages. If you live in areas with extreme heat and cold temperatures can be a problem occasionally.