CURTAIN WALL SYSTEM AND COMPONENTS THEREOF

摘要

A curtain wall system including panel units to be secured to a building structure between the building structure and an external space. Each panel unit includes a first mullion segment, a second mullion segment, and one or more panels. The first mullion segment of each of the panel units is attachable to a secured second mullion segment of an installed one of the panel units, to provide a mullion assembly defining a central cavity therein in which a central volume of air is isolated for at least partially thermally insulating the building structure relative to the external space, and a boundary region between the central cavity and the external space. Each mullion assembly includes one or more thermal insulator elements to at least partially define one or more thermal breaks between the external space and the boundary region.