welded frames types

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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 ...
The following size limitations per frame unit, are in enforced for welded elevation frames shipped from the factory. These limitations are in place due to the physical size of shipping tr...
Knock Down (KD) frames: KD frames are designed, manufactured and supplied with integral miters which include all notches, interlocking corner tabs and slots to allow for field assembly and do not r...
Drywall Slip-on frames are recommended and designed to be installed as KD (Knock Down) assemblies and not recommended to be welded (SUA). If a DW-Series or K-Series is welded prior to installa...
Optional closer reinforcements are located at 3" from hinge jamb to the beginning of the reinforcement plate. This applies to Regular Arm, Parallel Arm, Top Jamb. Regular Arm (RA) closer reinfor...
F-Series frames are available without returns: Fire Rated frames must have welded corners. Frames must include weled in wood or steel stud anchors. Installation requirements: Frames must be...
Masonry T anchor are approved for fire rated frames up to 3 hours. T Anchors are shipped lose for field installation. Anchor construction: The T portion and the strap do have minimum dimensions th...
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 ...