The 505 is the most rare and large sized variants of the Base-X series. It is designed to serve as a vehicle maintenance tent, tall enough and large enough to house a large truck or multiple HUMVEEs. It features 4 doors and 6 windows. 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 comes as one piece which can be installed on the interior of the frame. Currently we do not have the interior or exterior endcaps or floor but can be fabricated upon request. 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 15 minutes by a trained crew.