Ideal for area lighting along industrial walkways, platforms, cooling towers. For areas subject to vibration, such as conveyor walkways. Suitable for floor mounting. NEC/IEC. Structure mounting independent of guardrail. NPS 2 1/2" (65) base section for reduced vibration and longer lamp life. NPS 11/2" (40) top section. Slotted base section for IEC applications also available. Earth (ground) tab.