 In addition to the trays and suspension system, the VIG system includes a water distribution system which consists of a reservoir, a pump, and a water supply tube for growing plants hydroponically.The reservoir holds excess water for recirculation making the system a closed-loop.According to the patent abstract, “the design is particularly well-suited for installation in a double-skin façade of a building, or in an interior atrium, lobby, or similar structure.” Caplow and Adams built and installed prototypes of the VIG on the Science Barge (2008), at PS 333 in Manhattan (2010), and at PS 89 in Brooklyn (2011), and Caplow built an improved VIG at the Miami Museum of Science (2012).