Patent ID: 7036280

Claim:
A method of installing a curtain wall having a front side and a back side, said method comprising the steps of: connecting at least one mullion, comprising at least one glazing pocket, an I-section for supporting a first trim member and at least one protrusion for supporting a second trim member, to at least one first rail having a width greater than a width of said at least one glazing pocket and comprising at least one notch for insertion of said at least one first rail into said at least one glazing pocket and at least one protrusion for supporting third and fourth trim members, by at least one fastener; connecting at least one bead to said at least one mullion, in a lengthwise direction thereof by at least one fastener; attaching said curtain wall to a building by an anchor; inserting at least one first retainer into a notch in said at least one mullion to retain a glazing infill component against one said at least one mullion; and inserting at least second retainer into a notch in said at least one bead to retain said glazing infill component against one said at least one bead, wherein said glazing infill component may be installed from either said front side or said back side of said curtain wall.