FSDR25

Round Butterfly Combination Fire/Smoke damper

• 1 1/2 hour UL555 and Class I UL555S Classified.
• UL approval for dual directional air flow.
• Fail-safe design, which enables the damper to automatically assume the desired position when fire or smoke (if smoke detector present) interrupts operational power.
• 3,000 fpm and 4” w.g. maximum rating.
• Low pressure drop.
• Galvanized steel construction.

IOM

Submittal

Warranty