Smoke Leakage Class I True Round Smoke Damper

This damper automatically closes upon loss of power, and is controlled by a smoke detection system.

Model:	US
Depth:	18"
Orientation:	Vertical or Horizontal
Frame Material:	20 ga. Rolled Galvanized Steel
Frame Type:	Round
Blade Material:	20 ga. Double-Thickness Galvanized Steel (equal to 14 ga.)
Blade Action:	Single Blade
Blade Seals:	Silicone
Actuator:	Electric
UL Classified:	Smoke Leakage Resistance Class I 250°F or 350°F Approved for Dual Direction Airflow Approved for Dynamic Conditions
AMCA:	Tested to Standard 500D
Max Differential Pressure:	4 or 6 in. wg.
Max Velocity:	2000 or 3000 FPM

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