The invention relates to the production of unconstrained sizes of safes due to the manufacturing method based on edge rails first pre-formed, then cut to lengths, therefore meeting the recognized need for customization, simplification of manufacturing, and offering cost effective solution targeting commercial applications and private consumers alike. For every predestined thickness of modular elements of the container there are three different shapes of edge rails that are formed from two different widths of formable material of choice. The shape of edge rail for a door is formed from wider width, while the wider and the narrower widths form the walls, roof, and floor. Material for edge rails could be provided by steel mill in the form of flat strip drum-rolled for the roll-forming process in continuous manner, or being obtained by the shearing off of standard rectangular stock sheets for later forming in press brake. The three types of edge rail shapes A, B, and C preformed in either process, are subsequently cut to size depending of type and dimensions of modular panel. The said approach in production process allows utilizing individually manufactured parts assembled in rapid response to demand for customized product and eliminates the need to keep inventory of ready assembled bulky containers or pre-manufactured flat modules.

A synchronization rod for furniture drives for the synchronous moving of movable furniture parts, includes a coupling portion for connection to a furniture drive and a synchronization portion along a length of the synchronization rod, more particularly arranged between two opposite coupling portions. The synchronization portion, as seen in a cross-section taken orthogonally to the length, has a first outer contour portion in the form of a circular segment and a further outer contour portion, preferably adjacent to the first outer contour portion, having a geometry in a form that is not a circular segment. The circular segment comprises an angular range of between 250 and 330 and/or an angular range of between 180 and 350, and the further outer contour portion is arranged exclusively on one side of the synchronization rod.