UL classified Type TRSL for fire resistance and can be used in a variety of fire-rated assemblies. Meets ASTM C1396 Section 6 standard specification for gypsum board. Use as a component in select fire-rated construction assemblies for area separation walls, stairwells, elevator shafts, and other interior mechanical system or duct enclosures.1 Its noncombustible (as described and tested in accordance with ASTM E136) gypsum core is encased in moisture-resistant2 green, recycled paper facings.
1Consult UL Fire Resistance Directory for assembly information.
2ToughRock® Shaftliner is not designed for exposure to constant high-moisture conditions or direct water.
*FIRE SAFETY CAUTION – Passing a fire test in a controlled laboratory setting and/or certifying or labeling a product as having a one-hour, two-hour, or any other fire resistance or protection rating and, therefore, as acceptable for use in certain fire rated assemblies/systems, does not mean that either a particular assembly/system incorporating the product, or any given piece of the product itself, will necessarily provide one-hour fire resistance, two-hour fire resistance, or any other specified fire resistance or protection in an actual fire. In the event of an actual fire, you should immediately take any and all actions necessary for your safety and the safety of others without regard for any fire rating of any product or assembly/system. For additional information concerning fire ratings and fire safety, visit our Product Fire, Safety and Use Information page.
Enhanced fire resistance
Specialty application – designed for exterior ceilings
nominal inches2: 1″ (25.4 mm), ± 1/32″(0.8 mm)
Nominal2: 24″ (610 mm) – 3/32″(2.4 mm)
standard2: 8′ (2440 mm) to 12′ (3658 mm) ± 1/4″ (6.4 mm)
lbs./sq. ft., nominal (kg/m²): 4 (19.5)1
1Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2Specified minimum values are as defined in ASTM C1396.
ToughRock Shaftliner incorporates moisture-resistant paper but is not tested specifically for mold resistance. If you require a shaftliner product that has been tested for mold resistance in accordance with ASTM D3273, consider using DensGlass® Shaftliner. Please note that ToughRock® Shaftliner is not designed for exposure to constant high-moisture conditions or direct water.”