The Duro-Last Cleat Plate is a galvalume plate. The Galvalume finish has proven weatherability and resiliency. The configuration of the ribs and the hole is used to prevent the screw head from coming in contact with the Duro-Last roofing membrane. In addition to the stamped ribs, there are "cleats" stamped into the plate to hold the Duro-Last roofing membrane in place without tearing or puncturing the membrane in high-stress load applications. Cleat Plates are stamped to include a recessed 0.265-inch (6.7-mm) diameter hole in the center and a series of ribs for added strength. Also, because the cleats are not sharp, they are easier to handle. The Cleat Plate is a long-lasting and durable plate that is available from Duro-Last, Inc.