“Stick” curtain wall systems are shipped in pieces for field-fabrication and/or assembly. These systems can be furnished by the manufacturer as “stock lengths” to be cut, machined, assembled, and sealed in the field, or “knocked down” parts pre-machined in the factory, for field-assembly and sealing only. All stick curtain walls are field-glazed.
Frame assembly requires the use of either, a) “shear blocks” to connect vertical and horizontal framing elements, or b) “screw-spline” construction, in which assembly fasteners feed through holes in interlocking vertical stacking mullions into extruded races in horizontals.