Fireblock Dura L40/FMB – 60 Minute Fire-Rated Mineral Core
The Fireblock Dura/L40 is a high-performance 60-minute fire-rated door core built for environments where safety and reliability are non-negotiable. Engineered with a hybrid low- and high-density mineral core, it offers superior fire resistance, structural stability, and long-term durability. As part of Fireblock’s top-of-the-line Dura Series, this core is ideal for heavy-duty use in commercial, industrial, and public buildings.
Material: Mineral Core