Abstract: A data cabinet door has a plurality of latch bolts connected by cables to a central actuating plate. When the plate is depressed by a handle to release the bolts it is itself retained in the released position by a lever acting under the bias of a spring, to keep the bolts withdrawn. This lever is connected by a cable to a release plate associated with one of the latches so that when the door is slam-closed the release plate engages an abutment on the cabinet body and pulls the lever to release the plate, which latter springs up once more and permits all the latches to engage.

Abstract: The body of a cabinet for storing temperature-sensitive articles such as magnetic discs and tapes is built by a process which involves the successive steps of (i) fabricating an internal skin; (ii) attaching so-called "phase-change" material to the skin; (iii) applying insulative polyurethane foam in-situ to the structure of step (ii); (iv) casting concrete or the like water-bearing material around the structure of step (iii); and (v) completing the outer finishing skin. Thus the conventional "double-box" structure is avoided. The door for the cabinet can be built by a similar sequence in which "phase-change" material, insulative form and water-bearing layers are applied successively to a pan forming the internal face of the door.