Static Fire Dampers are approved for use in duct systems where the Air Conditioning and Heating system blower will be cycled off during the activation a fire alarm (usually turned off by an automatic fire detector)
75 A CLASSIC FIRE DAMPER
Blades in Air Stream
Used the airflow interruption from the stack of blades in the fire damper frame is not a main requirement.
75 B PAN FIRE DAMPER
High Hat – Blades Above Air Stream
Used when airflow or velocity in the duct is required.
75 D THIN FIRE DAMPERS
Thinline Damper with Blades in Air Stream
75 CR ROUND FIRE DAMPER
High Flow Blades, Out of Air Stream
Used in applications where a fire damper with 100% free area is desired.
75 DB THIN FIRE DAMPERS
High Hat – Blades Above Air Stream
75 C RECTANGLE FIRE DAMPER
High Flow Blades Out of Air Stream
Used in applications where a fire damper with 100% free area is desired.
75 CO OVAL FIRE DAMPER
High Flow Blades, Out of Air System
Used in applications where a fire damper with 100% free area is desired.
