Capsule Pak refrigeration systems consist of a condensing unit and evaporator coil contained in one housing. Capsule Paks are factory assembled, wired, charged, tested and fully equipped for fast and easy insertion into a factory prepared walk-in opening. The evaporator coil section mounts flush in a walk-in roof maximizing usable interior space. Capsule Pak models use high efficiency EC evaporator fan motors to circulate air throughout the walk-in. Additionally, there are no walk-in penetrations for drain lines on outdoor units which simplifies installation.