Abstract: This isolation hut intended for temporary or provisional use, notably as a polling-booth during elections or like events, or as a transportable trying cubicle, a dressing-room during occasional events, or the like, consists of a frame structure made from a basic folding sheet of cardboard, pasteboard or light-weight multilayer material, or metal, comprising a plurality of lateral walls and a front access aperture. This structure is stiffened on the one hand by bending the basic sheet material and on the other hand by means of posts disposed at the corners of the structure, a cross bar constituting a lintel disposed at the top of the front aperture, and possibly a desk-forming element, all these elements being obtained by folding a flexible sheet of the same basic material as the basic folding sheet constituting the frame structure.