This smoke damper includes factory mounted actuator, is made of galvanized steel, and it measures 8¼ inch width, 7⅞ inch height, 8⅛ inch length. This smoke damper has one phase, 60 Hz, and 7⅞ inch diameter.
Technical Specs
ItemSmoke Damper
Damper ApplicationSmoke
Overall Height7 7/8 in
Rough Opening ShapeRound
Overall Width8 1/4 in
Blade MaterialGalvanized Steel
Overall Diameter7 7/8 in
Damper TypeDynamic
Nameplate Voltage24V DC
IncludesFactory Mounted Actuator
Closure Velocity Rating3,000 fpm
Free Area43.3 sq in
Switch ActionNormally Closed
Fusible Link Temperature350 Degrees F
Airflow DirectionHorizontal, Vertical
StandardsCSFM, IBC, NFPA 90A,92,101,105, UL 555S
Maximum Temperature Rating350 Degrees F
Includes MotorMotor Included
Frame MaterialGalvanized Steel
Closure TypeMotorized
For Nominal Duct Diameter8 in
Number of Panels1
Overall Length8 1/8 in
For Duct ShapeRound
Frame Material Thickness20 ga
Maximum Air Pressure4 in wg
Rough Opening Width8 in
Maximum Air Velocity3,000 fpm
Rough Opening Diameter8 in
Closure Pressure Rating4 in wc
Blade TypeButterfly
Mounting PositionHorizontal
ACMA Leakage Class2
Frame Less Flange50.3 sq in
Blade Seal MaterialSilicone
Phase1
For Air TypeEmergency Smoke
Blade Material Thickness14 ga
Frequency60 Hz
Country of OriginUnited States
(subject to change)