knocked down vs face welded metal door frames

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The rough opening dimensions are the same for either Welded (SUA) or Knock Down (KD) frames For F, FN, FE, DE, MU three sided frames and four sided borrowed light frames: New masonry Walls: N...
 For DW, K three sided frames and four sided borrowed light frames: Three sided frame = door opening width (order size) plus 1 1/2" minimum to 2" maximum and the door opening height ...
Welded (SUA) frames: Welded frames are designed, manufactured and supplied with either square cut/notched corners or with (saw or die) miters and may or may not have connection tabs and slots. Thes...
Steelcraft have tested different types of doors and frame assemblies using Zero International gasket seals for the various STC ratings. Tests are in accordance to ASTM...
Frames can be installed either KD (knock down) or welded to receive the STC rating.
Steelcraft borrowed light frames are not listed/tested. Check with the glass manufacture if they are listed and with what type of framing used.
Sound seals are required. Zero International Gasket Notes: Perimeter Seals – Zero #475 applies to the stop of the head and jambs. Door bottom – Zero #367, surface applied. Threshold ...
Reveal is the distance or measurement from the face of the door out to the face of the frame on the push side of the door.Other related terms:Door face - The exposed surface of door visible wh...
If the door hits the frame (or rubs on the rabbet of the head or jamb) the frame is out of square and improperly installed. Door edge rubbing on the rabbet - shimming the hinges may resolve the...
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...
Steelcraft frames and doors are furnished with a high grade, low gloss, baked-on prime paint that provides the best possible protection against corrosion, abrasion and weather, and is an excellent ...
Yes, wood doors can be used and installed in most hollow metal frame applications including FE-Series and DE-Series Double Egress frames. Caution - For fire rated applications the wood door manufa...
Elevation frames are available in: F-Series (F16 or F14) FN-Series (FN16 or FN14) MU-Series (MU16, MU14) Additional parameters of the frame components: Perimeter (Head and Jambs) Frame: ...
Industry standards for hollow metal frames installation tolerances have been developed by both the SDI (Steel Door Institute) and HMMA (Hollow Metal Manufacturers). Both standards are based on the ...