fire rated up to 3 hours with WHI UL FM label applied .
all of doors are designed and fabricated under SDI requirements.
1 3/4" thickness (44.5mm),non-handed assemble with reversible hinge shim parts.
fire rated wire glass or louver option for vision lites .
all materials is approved in accordance with NFPA ASTM and other standards .
steel stiffener, hardware preparations and reinforcement are conformed with ANSI standards .