Fire Resistance & Certification
The UL Certified Fire Rated Roller Shutters are tested and listed under UL 10B / UL 10C standards for fire protection and UL 1784 for smoke and draft control. These shutters are UL Listed, Factory Mutual Approved, and certified by the California Office of the State Fire Marshal. Available fire-resistance ratings include ¾ hour, 1½ hours, 3 hours, and 4 hours, ensuring compliance with U.S. building and life safety codes.
Curtain Construction
The curtain is made from interlocking, roll-formed galvanized steel slats finished with a GalvaNex™ polyester enamel coating. Cast-iron end-locks or wind-locks are riveted to alternate slats, ensuring perfect alignment and preventing wear under repeated operation or high heat. Insulated versions (Firemiser ERD20 / ERD21) use double-skin slats filled with mineral wool insulation, achieving zero flame spread and smoke development (ASTM E84).
Thermal & Acoustic Insulation
Insulated models provide an R-value of 5.3 and a U-factor of 0.189, offering superior thermal separation between interior and exterior spaces. This makes them ideal for areas where both fire protection and environmental control are required.
Guides, Brackets & Hood
Structural steel guides are bolted directly to the wall and powder-coated to match the curtain. Brackets support a steel counterbalance shaft containing torsion springs for smooth lifting and closing. The hood enclosure is manufactured from galvanized steel with a GalvaNex™ or SpectraShield® finish, providing fire protection at the head of the door and a clean architectural appearance.
Drive & Operation
Available with AlarmGard® motorized control or fusible-link mechanical activation, these shutters can close automatically upon signal from a building’s fire alarm or when a set temperature threshold is reached. After activation, the system allows for manual or automatic reset, minimizing downtime and ensuring fast return to service.
Optional Finishes
Available in standard colors (Gray, White, Tan, Black, or Brown). Upgrades include stainless steel (#4 finish), SpectraShield® powder coating in 180+ colors, or GalvaNex™ Ultra corrosion-resistant coating for demanding environments.