A segmented closure system for providing a closure strip of variable length capable of allowing the efficient opening and closing of an object to form a barrier such as a temporary door. The segmented closure system generally includes a pair of closure members each including a magnet for removably securing the closure members together. Each closure member includes a fastener for securing the each closure member to an object, such as to a pair of adjoining plastic sheets to form a temporary barrier such as a door. Each closure member may include mating connectors for linking the pair of closure members together end-to-end in a linear or angled orientation. Each closure member may include a pivotable segment connected to its main body by a connector pin. Temporary barriers of variable sizes may be easily constructed by interlinking multiple closure members together on opposite edges of a pair of plastic sheets.