Abstract: Disclosed herein are methods, systems, and devices for allowing access for maintenance and servicing of environmental control systems of prefabricated equipment enclosures. In one embodiment, an enclosure includes a first wall, a first environmental control unit, and a first door. The first door is mechanically coupled with the first environmental control unit and the first wall. The first door is configured to have a first closed position allowing in-service operation of the first environmental control unit for an internal space of the enclosure.

Abstract: Heat insulating flexible material consisting of a stack of reflective elements, separated by an insert material, characterized in that it comprises a reflective foil on which is deposited an insert material in the form of a powder having a particle size distribution less than 1 ?m, said reflective foil being coiled up or folded to delimit the reflective elements.