Baluster

Baluster or Spindle

Baluster

Baluster/Spindle is the vertical member, plain or decorative that acts as the infill between the handrail and baserail (or tread if cut string).

Curren Building Codes require balusters not to allow a 125mm sphere to pass between them.

WIKIPEDIA ENTRY FOR BALUSTER

Baluster Picture   Baluster 2 Picture