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Dampers | Fire and Smoke Dampers

Safe-Air Dowco has many years of experience in making UL555 and UL555S classified Combination Fire and Smoke Dampers to protect openings through fire and smoke rated walls and floors.  Our combination fire and smoke dampers come with damper, heat sensor, and actuator mounted in a common sleeve (standard length 16", depending on model), and most dampers are rated for both horizontal and vertical mounting to the same maximum size limitations. 

Models variants include Class I and Class II leakage rated, 1.5-hour and 3-hour rated, V- and Airfoil blade arrangements, Corridor, and Out-of-Partition--we have solutions for traditional fire partition penetrations as well as special situations such as duct terminals and dampers requiring grille access. 

A full listing of our product offering may be found below along with some summary statistics for each model; if you click on the orange triangle on the right side, you will find further information regarding each model including product submittals.

Model Blade Style Rating 1½HR or 3HR Dynamic Static Mounting Min Size W x H Max Single Section W xH Class Blade Conf. Blade Width Blade Gauge Frame Width
471
(Corridor)
Blade Style: V-Blade
Rating: N/A
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 12" x 9"
Max Single Section: 24" x 24"
Class: 1
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
472
(Corridor)
Blade Style: V-Blade
Rating: N/A
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 12" x 9"
Max Single Section: 24" x 24"
Class: 2
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
771
Blade Style: V-Blade
Rating: 1-1/2
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 6"
Max Single Section: 36" x 48"
Class: 1
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4 -5/16"
Details
771-3
Blade Style: V-Blade
Rating: 3
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 6"
Max Single Section: 36" x 36"
Class: 1
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
771-OP
(Out of Wall)
Blade Style: V-Blade
Rating: 1 1/2 & 3
Dynamic/Static: Dynamic
Mounting: Vertical Only
Min Size: 8" x 10"
Max Single Section: 36" x 42"
Class: 1
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
772
Blade Style: V-Blade
Rating: 1-1/2
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 6" x 6"
Max Single Section: 36" x 48"
Class: 2
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
772-3
Blade Style: V-Blade
Rating: 3
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 6" x 6"
Max Single Section: 36" x 36"
Class: 2
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
772-OP
(Out of Wall)
Blade Style: V-Blade
Rating: 1-1/2 & 3
Dynamic/Static: Dynamic
Mounting: Vertical Only
Min Size: 8" x 10"
Max Single Section: 36" x 42"
Class: 2
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
772M
Blade Style: V-Blade
Rating: 1-1/2
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 6"
Max Single Section: 36" x 48"
Class: 2
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
772M-3
Blade Style: V-Blade
Rating: 3
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 6"
Max Single Section: 36" x 36"
Class: 2
Blade Config: Opposed
Blade Width: 6"
Blade Gauge: 16
Frame Width: 4-5/16"
Details
781
Blade Style: Airfoil
Rating: 1-1/2
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 12" x 8"
Max Single Section: 32" x 48"-V / 32" x 36"-H
Class: 1
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 20/14
Frame Width: 4-5/16"
Details
781-3
Blade Style: Airfoil
Rating: 3
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 12" x 8"
Max Single Section: 32" x 48"-V / 32" x 36"-H
Class: 1
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 20/14
Frame Width: 4-5/16"
Details
782
Blade Style: Airfoil
Rating: 1-1/2
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 8"
Max Single Section: 32" x 48"-V / 32" x 36"-H
Class: 2
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 20/14
Frame Width: 4-5/16"
Details
782-3
Blade Style: Airfoil
Rating: 3
Dynamic/Static: Dynamic
Mounting: H/V
Min Size: 8" x 8"
Max Single Section: 32" x 48"-V / 32" x 36"-H
Class: 2
Blade Config: Opposed
Blade Width: 6.5"
Blade Gauge: 20/14
Frame Width: 4-5/16"
Details
Combination Fire/Smoke Damper
Blade Style: Installation, Operation, Maintenance
Details
Corridor Fire/Smoke Damper
Blade Style: Installation, Operation, Maintenance
Details
Out-Of-Partition Fire/Smoke Damper
Blade Style: Installation, Operation, Maintenance
Details