A transportable shelter includes a frame, an inner liner, and an outer liner. A plurality of interconnecting members of the frame are connected to create a fixed structural element, at least one end structural element, and a plurality of purlin portions. The purlin portions attach the fixed structural element to a first end structural element. The fixed structural element has a first inner track and a first outer track, and the first end structural element has a second inner track and a second outer track. The inner liner attaches to the first and second inner tracks, and the outer panel attaches to the first and second outer tracks. A dead-air space exists between the inner liner and the outer panel when the frame is assembled and the inner liner and the outer panel are connected to both the fixed structural element and the first end structural element.