Reinforced sliding panel structure

A sliding panel structure, comprising:

• a frame comprising an upper support track and a lower guide rail;
• a first panel connected between the upper support track and the lower guide rail, wherein a vertical edge of the first panel comprises a groove member;
• a second panel connected between the upper support track and the lower guide rail, wherein the second panel comprises a sliding panel and comprises:
• a tongue member configured to mate with the groove member of the first panel, wherein the tongue member is disposed on a first vertical edge of the second panel;
• one or more flange elements disposed on the first vertical edge to overlap a portion of the first panel when the tongue member is inserted into the groove member;
• a sliding panel pivot axis;
• and
• an extension for riding in the lower guide rail to prevent undesired pivoting of the second panel about the sliding panel pivot axis;
• and
• a first mutual attraction device, comprising:
• a first mutual attraction part;
• and
• a second mutual attraction part connected to the second panel;
• and a fulcrum for tilting the second panel when the first mutual attraction part engages the second mutual attraction part, the tilting of the second panel allowing for the extension to disengage the lower guide rail to allow the second panel to pivot about the sliding panel pivot axis.