Smoke Dampers
Smoke dampers are UL555S tested and labeled, low leak damper and actuator assemblies constructed to restrict the spread of smoke in HVAC systems that are designed to be automatically shut down in the event of a fire, or opened to control the movement of smoke within a building when the HVAC system is part of an engineered smoke control system.
S-RD-I
True Round Class I Low Leakage Smoke Damper
Product Overview
Model S-RD-I true round single blade UL555S Leakage Class 1 smoke damper for use in ducts that penetrate smoke rated barriers.
- UL555S File #R25410, ULC S112.1
- Rated to 2,000 fpm and 4" w.g.
- With factory furnished actuator, provides fail-safe operation (the damper automatically goes to the desired fail-safe position when fire interrupts power)
