Interior doors of the U series are covered with UV varnish. This is a modern multilayer material, which exceeds the characteristics of enameled paint and varnish analogues. Influences durability of doors, resistance to solar radiation and operation in different types of rooms. Uni LOCK coating provides resistance of the door leaf to external chemical and physical influences. Environmentally friendly coating material.It has no analogues in quality. Collapsible system. Any composite element is replaced if necessary. This is convenient: it is enough to replace the damaged part, without the purchase of a whole cloth.