Doors
TR – Temperature Rise Core
Key features
- Additional protection against heat on the unexposed side
- Mostly for doors in the path of egress
- Two core types available:
- Solid mineral slab
- Steel stiffened with mineral wool
- 1 3/4” door thickness only
- Edge seam options:
- Lock seam (PA) 18- or 16-gauge
- Lock seam and putty filled (PAF) 18- or 16-gauge
- Continuously welded seamless edge (CW) 18-, 16-, 14- and 12-gauge
- Thermal performance
[R – ft²·°F·h/BTU (m²·K/W); U – BTU/ft²·°F·h (W/m²·K)]- R3.9 (0.69) – U 0.26 (1.46) per ASTM C518
Performance (Mineral slab)
- 250°F in 30 minutes, up to 1-1/2 hours fire rating
- 450°F in 30 minutes, up to 1-1/2 hours fire rating
Performance (Steel stiffened with mineral wool)
- 450°F in 30 minutes, up to 1-1/2 hours fire rating
Fire rating
Please consult our chart for size limitations
STANDARD FEATURES
- A40 galvannealed material
- 16-gauge flush and welded top and bottom cap (standard for mineral slab)
- 16-gauge top and bottom welded inverted channel (standard for steel stiffened)
HARDWARE REINFORCEMENT
- Hinges: 7-gauge
- Closer: Available in 16-gauge, 14-gauge and 12-gauge
- Locks: 12-gauge