standard hollow metal door undercut

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ASTM E-119 is a test standard for walls, partitions and floor or roof systems: This test standard is also used for ceramic type glasses when used as window wall and/or borrowed light frames. ...
1 3/4" is the standard door thickness. Steelcraft only makes a nominal 1 3/4" thick door. A 1 3/8" was made for light duty commercial applications but that product was discontinued in 1999.
As of February 2016, ND locks began shipping with a new latchbolt. The new latchbolt offers substantially improved performance in adverse door conditions (ex, with heavy door loading) andis more ro...
Prior to February 2016, using ND-Series locks on hollow metal doors required the use of latch spacers which prevent the latch from "fishtailing" (back end of latch moving from side to side). Latch ...
Steelcraft locates all butt hinges from the top of the door to the centerline of each hinge as standard practice: Locating hinges to the center line of the hinge keeps all hinge locations the sa...
Yes, for Panic devices only by ordering the top rod kit part #050574, bottom rod kit part #050575, and screw pack #090061. Fire Rated devices can NOT be converted and would require a compl...