The 203 is a very common smaller variant of the Base-X series and is faster and easier to setup/take-down as a result. It is mainly used to inter-connect with larger tents to serve as addition space such as a personal office or a medical room but can also serve as a stand-alone tent. It is just large enough to house a few personnel or store equipment in and features 4 doors, 4 windows, and 2 ridge vents for air circulation. A secondary layer of a white interior canvas skin called a liner is optional. Its purpose is to provide additional insulation and includes electrical, an ECU plenum for air distribution, and a soft green floor for weather proofing which comes as one piece and can be installed on the interior of the frame. The frame consists of durable aluminum poles which the exterior canvas skin is connected to, and the system can be setup in a matter of minutes by a trained crew.