Flow Sciences, Inc. was tasked with designing a modular containment unit that would house a Genevac EZ2 Elite Evaporator and allow for transfer of materials post-manipulation into a separate, connected balance enclosure for weighing. The Genevac equipment required a level, sturdy work surface and a 2” air gap between the evaporator and the bench edge, according to manufacturer installation materials. The Genevac Evaporator was to be housed in a unit alone that connected via a square pass-through to a separate unit where powder handling could commence. Environmental health and safety officers established standards for the lab which required that bag-in/bag-out Dual HEPA filtration be utilized. Due to facility constraints, particularly ceiling height (3.5 feet was designated the maximum height of the enclosure in order to allow for 18” clearance from the ceiling), prohibited the usage of top-mounted fan/filtration systems, so a rear-mounted option was designed. In addition to height restrictions, there was also a depth restriction of six feet and a length restriction of eight feet.