ToughRock and DensGlass Shaftliner is fiberglass mat gypsum shaftliner for stairwells, shaft wall, duct work, and area separation walls. ToughRock Shaftliner panels have a gypsum core encased in moisture-resistant green paper facings. DensGlass is backed on both faces with enhanced fiberglass mat.
FIRE RATINGS
Test Standard |
Rating |
Design Number |
ASTM E119 |
2-hr |
GP/WA 120-06 |