The FSDR25 is a "true round" Class 1 leakage-rated combination fire and smoke ... closure through the damper actuator. THE EFL and PFL allow the damper to reopen automatically after a test, smoke ...

Ruskin has released its new DFD-LP dynamic fire damper, which is rated for dual-direction airflow and can be installed vertically in walls or horizontally in masonry floors. The one-and-a-half-hour ...