The 105 is an uncommon 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 but can also serve as a stand-alone tent. Its short width limits its use to be used as either a hallway or entry way and features 6 doors, 6 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.