A customizable closure system comprising panels of a pre-selected size and one or more conversion kits for mounting the panels. A room divider conversion kit comprises a hinge for converting the panels into room dividers, and a bypass conversion kit comprises a header for converting the panels into slidable panel doors, such as a closure for a shower area. Other conversion kits include a swing conversion kit and a hanger conversion kit. One embodiment of the panels further comprises a reinforcing system for securely retaining the panes with the panel.

A joining element for connecting together two or more panels is disclosed. The joining element includes at least one strip section; wherein the strip section forms a first part and a second part; wherein the first part and the second part are connected together along a hinge line or area. In addition, the second part includes a connection member designed to engage with a complementary connection member. In one embodiment the connection members comprise a button and an eyelet.

A space divider made from a single board having a fibrous composition, the board being severed to define a plurality of elongated panels separated along lines at edges of the panels and being machined to form hinge structure along said lines, the hinge structure being formed by machining to remove stock from the board while leaving living hinge elements of said fibrous composition at said hinge structure, the hinge structure being constructed and arranged to enable associated panels to be folded against one another.