This 8′ x 12′ x 9′ structure, which the Energy Studies in Buildings Laboratory designed and constructed in 2010, has been outfitted with hydronic wall panels, floor and ceiling, humidification and dehumidification and is highly customizable with ducted airflows and individually assignable radiant panels, allowing us to test human comfort and perception in a living model.  Not only are the interior panels removable, allowing us to customize the interior materials and design, but the temperature, relative humidity, air pressure, air turnover and velocity, ventilation source, amount of illumination, and lighting source are all manipulable.  This flexibility allows us to test a range of hypotheses, ranging from whether certain building materials visually change our thermal perception, to whether those building materials or the humans indoors perceiving them are influencing the indoor microbiome.