Stick-type curtain wall glazing system is a type of Structural Glazing where the frame verticals or the mullions and the glass panels are erected and connected piece by piece. It is one of the oldest curtain wall types. The vertical mullions are attached first to the floor slabs and then the horizontal mullions are attached to the vertical ones. The glass panel between the vertical and the horizontal mullions along with the spandrel which can be either glass or aluminium are then installed into the erected grid work. The visual effect of stick framing is often taken into account since there will be more vertical mullions taking the wind load than other glazing systems.