Rain Diverter is made of 28 or 26 Gauge Galvanized, Zincalume or Painted Steel, 10' long Rain Diverter is a specially made piece of metal flashing used to divert rainwater away from a doorway. This not only keeps you from getting wet but also prevents the door from deteriorating. For architectural, residential, and commercial roofing. ASTM A-653, ASTM A-792