4 Heights: 0.4m, 0.6m, 0.8m and 1.0m (above ground), 3 Head Styles: Domed, Pillar or Flat Top.This robust and vandal resistant commercial bollard has a double Parabolic Reflector head and a clear, high quality UV stop PC diffuser. The louvres and diffuserenable an even, downwards light dispersal around the bollard and add protection to the bulb.IK IMPACT TESTED see specifications below for more information.PLEASE NOTE:The Parabola Bollard head reflector emits a decent lower-level spread of light, ideal for use as a glowing marker for access routes and amenity. For areas where a stronger and wider illumination is required, try either of these two options:1) The Lighthouse Bollard2) The Ledifice Bollard*Please allow an extra working day for quantities of 8 or more*