Class – I Motorized Smoke Dampers –UL 555S
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LIFE SAFETY DAMPERS
SMOKE DAMPERS – UL 555S

 

Motorized Smoke Damper – UL 555S – Class-I

 

Model MSD-GB-20C1-A
Construction Galvanized Steel
Blade 3V – Single Skin
Leakage Class-I as per UL-555S
Max Velocity 2000FPM
Max Pressure 4″ w.g
Airflow Direction Either
TRD 165 ” F (74 “C)
Installation V/H

BETEC CAD.’s B-20 Series Motorized smoke damper is high performance UL-555S classified with Class-I leakage rating. May be installed vertically or horizontally (with blades running horizontally) and is rated for air flow ineither direction.

 

Motorized Smoke Damper – UL 555S – Class-II

 

Model MSD-GB-20C2-A
Construction Galvanized Steel
Blade 3V – Single Skin
Leakage Class-II as per UL-555S
Max Velocity 2000FPM
Max Pressure 4″ w.g
Airflow Direction Either
TRD 165 ” F (74 “C)
Installation V/H

BETEC CAD.’s B-20 Series Motorized smoke damper is high performance UL-555S classified with Class-II leakage rating. May be installed vertically or horizontally (with blades running horizontally) and is rated for air flow ineither direction.

 

Size Limitation
Module Size: Width x Height Mounting Position
Single Max x Max. 9″ x 9″ V/H
Single Max x Max. 36″ x 36″ V/H
Single Max x Max. 72″ x 36″ V/H

Round Spigot Suffix – R after the Model