True Round Combination Fire & Smoke Dampers
The FSD-RD series are UL, ULC and California State Fire Marshal listed as both a UL555 fire and UL555S smoke damper. This True Round damper is available in a 1-1/2 hour fire rating, and with UL555S Class I or Class II leakage ratings and a wide variety of electric and pneumatic actuators
  • Available in 1-1/2 Hour fire rating, with either UL Class I or Class II leakage.
  • Available for both vertical and horizontal mount.
  • Available with 16" (standard), 20" or 24" deep frames/sleeves.
  • Available with 24VAC, 120VAC or 230VAC electric actuators or Pneumatic actuators
  • Provided with a resettable heat responsive thermostat (O/R). Thermostat with built in switch (STO/R) or dual thermostat with override capability (DTO/R) available as add on options.
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