The SD4220 is a steel partition door range, based on a steel profile system (P50). With these products SWEDOOR provides a hi-end solution with focus on design, possibilities and easy installation. The products can be combined in many different variations. The basic product is welded in one piece but could also be combined with seperate build-on sections by a sophisticated hidden snap-in-system that leaves the connections almost invisible. Except unclassified demands this particular version also covers fire-demand E60.