The door leaf fastener cover is clear anodized aluminum
Fasteners: 10-24 x 7/8" undercut, self-drilling, thread-forming tek machine screws, stainless steel for the frame and 1/4-20 x 3/4" round head self-drilling tek machine screws, zinc plated for door
Lengths: 78-3/4", 83-1/8". 85", 95" and 118-3/4"
Fire Rating - tested and certified by UL ® (the U.S.A. and Canada) on 4'0" x 10'0" fire-rated doors, based on the following
20 minutes - wood doors
90 minutes hollow metal and composite wood fire doors