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FSD-331

The FSD-331 is a combination fire smoke damper with airfoil blades. This model is rated for use in walls, floors, or partitions with a fire resistance rating of 3 hours or more and a Class I leakage rating.

  • Pressure: Up to 8 in. wg (2 kPa)
  • Velocity: Up to 4000 fpm (20.3 m/s)
  • Temperature: Up to 350°F (177°C)
Codes:

International Building Code (IBC)

National Fire Protection Association (NFPA 80, 90A, 92, 101, and 105)

Certifications:

CAN/ULC S112 Classified Fire Damper

CAN/ULC S112.1 Classified Smoke Damper

California State Fire Marshal (CSFM) Listing #3230-0981:0104 and #3225-0981:0103

UL 555 (Listing #R13317)

UL 555S (Listing #R13317)

AMCA Air Performance

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