Frame assemblies and photovoltaic devices including the same

A stack of photovoltaic devices comprising:

• a first photovoltaic device comprising:
• a module having an edge formed around a perimeter of the module, wherein the module comprises a semiconductor material located between a front sheet and a back sheet;
• and
• a rail comprising a coupling surface at a top side of the rail, and a recessed surface offset from the coupling surface and towards a bottom side of the rail, wherein:
• the coupling surface extends from an interior side of the rail towards an exterior side of the rail;
• the recessed surface is offset from the coupling surface by a recess distance;
• the coupling surface at the top side of the rail is coupled to the back sheet of the module;
• and
• the edge of the module is offset from an exterior side of the rail towards the interior side of the rail.;
• and
• a second photovoltaic device comprising a second base member having a support surface located at a bottom side of a second rail, wherein:
• the support surface of the second rail has a width that is less than the width of the recessed surface;
• and
• the support surface of the second rail contacts the recessed surface.