UL Labels – Frame Specifications
Karpen Steel can provide UL 3-hour labeled frames as follows:
| Profile | Welded/KD | Jamb Width Min/Max (with ½” backbends) | Jamb Face Min/Max | Head Face Min/Max | Notes |
|---|---|---|---|---|---|
| Double Rabbet | Welded | 4″ – 14″ | 1¼” – 4″ | 1¼” – 4″ | Faces must be equal |
| Single Rabbet | Welded | 3 – 4″ | 2″ – 3″ on door side | 2″ – 3″ on door side | |
| Single Rabbet | Welded | 4″ – 14″ | 1¼” – 4″ on door side | 1¼” – 4″ on door side | |
| Double Egress | Welded or KD | 5¾” – 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 Rabbet | KD | 4½” – 14″ | 2″ – 4″ | 2″ – 4″ | Faces must be equal |
| Single Rabbet | KD | 3″ – 14″ | 2″ – 4″ on door side | 2′ – 4″ on door side | |
| Communicating Double Rabbet Only | Welded or KD | 4⅞” – 14″ | 1¼” – 4″ welded 2″ – 4″ KD | 1¼” – 4″ welded 2″ – 4″ KD | Faces must be equal |
GENERAL NOTES
- Minimum stop height is ⅝”.
- 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.
