Kick Plates (aka Toe Plates or Toeboards) are required by OSHA and are used to prevent materials from sliding off, or being kicked off a roof and hitting the surface, or people, below.  Kick Plates can be used with most Rooftop Railing products. Appropriate Type 69 Fittings are available.
NextGen Custom Railing Kick Plate™
NextGen Custom Railing™ Kick Plate