Dual Glazing Panel System

A panel unit assembly comprising:

• interlocked first and second engagement members each having panel-receiving cavities for receiving and retaining edge portions of the panels;
• two pairs of opposed transparent or translucent panels mounted in the panel receiving cavities of the first and second engagement members with an airspace disposed between the panels to form adjacent interlocked panel units;
• the panel units being subject to positive and negative forces which may cause the engagement members to pivot with respect to each other;
• the first engagement member having a wall disposed between the first pair of panels and a male member projecting from the wall,
• the male member including catch rails;
• and
• the second engagement member having a back wall disposed between the panels and a pair of sidewalls defining an interlock cavity for receiving the male member,
• the catch rails being disposed adjacent to the inner surfaces of the sidewalls to engage the sidewall inner surfaces and limit the pivoting movement of the engagement members.