Abstract: 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.

Abstract: 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.

Abstract: 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 has liner connection elements for attaching to the first and second inner tracks, and the outer panel has panel connection elements for attaching 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.

Abstract: A mud flap comprises a rigid element which is permanently attached to a vehicle, a bracket depending from the bottom of the rigid element, and a flexible flap element releasably attached within a channel of the bracket. Pins through holes in the channel walls form the releasable attachment. The pins terminate in resilient detents. When a detent is not deformed, the shaft and detent is larger than the holes in the channel walls. This serves to retain the pin within the holes in normal use. However, an operator may nevertheless grasp the enlarged pin head and extract the pin when it is desired to remove the releasable element.