UL Labels – Frame Specifications

Karpen Steel can provide UL 3-hour labeled frames as follows:

ProfileWelded/KDJamb Width Min/Max (with ½” backbends)Jamb Face Min/MaxHead Face Min/MaxNotes
Double RabbetWelded4″ – 14″1¼” – 4″1¼” – 4″Faces must be equal
Single RabbetWelded3 – 4″2″ – 3″ on door side2″ – 3″ on door side
Single RabbetWelded4″ – 14″1¼” – 4″ on door side1¼” – 4″ on door side
Double Egress Welded or KD5¾” – 14″Double egress profile, Narrow side: 1⅜” – 3″ Wide side: 2⅝” – 4¼”Single rabbet profile 2″ – 4″ on door side 2⅝” – 4⅝” on opposite door side (welded) Double Egress profile (KD)8’0″ x 8′ 0″ Max Door Size
Double RabbetKD4½” – 14″2″ – 4″2″ – 4″Faces must be equal
Single RabbetKD3″ – 14″2″ – 4″ on door side2′ – 4″ on door side
Communicating Double Rabbet OnlyWelded or KD4⅞” – 14″1¼” – 4″ welded 2″ – 4″ KD1¼” – 4″ welded 2″ – 4″ KDFaces must be equal

GENERAL NOTES

  • Minimum stop height is 5⅝”.
  • Door rabbet to suit door thickness.
  • Backbends: ¼” min., ¾” max. All frames must have backbends. Both backbends must be in the same plane.
  • Frames must be CRS prime painted or A60 Galvannealed, or G90 Galvanized.

OPENING SIZES

  • Singles: 4′-0″ max. width x 10′-0″ max. height.
  • Pairs: 8′-0″ max. width x 10′-0″ max. height.

ANCHORS

  • All labeled frames must have welded in anchors.
  • 2 anchors for 60″ jambs or less.
  • 1 additional anchor for every additional 30″.
  • E.O.Anchors include expansion bolts.

HARDWARE CONSIDERATIONS

  • 2 hinges for 60″ jambs or less.
  • 1 additional hinge for every additional 30″.
  • Openings over 8′-0″ must use heavyweight hinges
  • Frames must be reinforced for hinges and closer and a strike. Openings must have positive latching.

FIXED MULLIONS

  • Faces: 2″ min., 6″ max.
  • Stop: 5/8″ min.
  • Soffit: 1″ min.
  • Jamb Width: 4½” min., 12″ max.
  • Note: Doors cannot swing off the mullion.
  • Removable mullions not available on labeled frames.

Hinges for Labeled Frames