Use for steps found in front of commercial or civic buildings where wide or dramatic entrances are common. May also be used for window louvres in larger scale applications. Precision Injection Molded or Vacuum Formed in White Styrene Plastic. Please Note: Step -1, 2, 4, 8 and 12 have a 34 degree step grade. Step -101, 201, 401 and 801 have a 17 degree step grade.