The utility model relates to the field of agriculture and can be used for growing crops in closed ground. The technical result of the invention is to increase the manufacturability of installation and production, increase reliability and stability. The technical result is achieved in that the greenhouse is collapsible, containing a support frame with a coating fixed to it, made in the form of arches successively placed one after another and interconnected in such a way that longitudinal connecting elements are placed between the arches along the support frame, forming longitudinal connections all arches and fastening nodes connected to arches, each arch consisting of at least one element, arches and longitudinal connecting elements are made of metal profiled silt with a rectangular cross-section, the mounting unit contains at least one fastener (insert) with an external surface corresponding to the inner surface of the metal profile with a rectangular cross-section, one end of which is permanently attached to the frame element, characterized in that the fasteners are integral (for example, by welding ) are attached to the longitudinal connecting elements. The doorway and door located in at least one of the extreme arches can be made of all-metal molecular weight. The longitudinal connecting elements can be made integral, the connecting elements-inserts are located between the ends, and one end of the connecting element-inserts is connected to the adjacent connected end of the arch element by a fixed connection. The lower longitudinal elements may include fasteners located on one side, and two mutually perpendicular fasteners are located in the corner portion, perpendicular to the lower longitudinal element. The upper longitudinal element can be connected to the arches by a screw connection. Fasteners may contain additional screw connections that increase the reliability of the assembled structure. The metal elements of the supporting frame can have a protective poly
