Internal steel stiffeners extend the full door width to ensure B18, B16 and B14 Series flush doors meet architectural requirements and industry standards for full flush and steel-stiffened doors. Stiffeners are welded to the door face sheets and bonded to the opposite panel, bolstering strength and durability. Full-height, epoxy-filled mechanical interlock edges provide structural support and stability.
Beveled hinge and lock edges allow tighter installation tolerances, ensure easier operation and eliminate binding and sticking. The B Series doors are 1-3/4” (45mm) thick and offer a wide range of specifiable options covering sizes, glass light designs, edge constructions and mechanical, pneumatic and electrical hardware preparations.
Doors meet the broadest fire rating requirements; they are listed for installations requiring compliance to both neutral pressure testing (ASTM E152 and UL-10B) and positive pressure standards (UL-10C)
Factory applied baked-on rust-inhibiting primer paint in accordance with ANSI A250.10-1998 (R2004)