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Dampers | Back Draft Dampers

Backdraft dampers are designed to allow airflow in one direction and prevent reverse airflow, and can be used for both intake and exhaust applications in HVAC systems.  Backdraft dampers may be opened by air pressure differential and closed by gravity (hence the common name gravity dampers), that is, the system pressure and flow operates the damper, or motorized with an electric or pneumatic actuator for a greater degree of positive control.  Adjustable and removable counterweights allow for calibration of damper operation.  Our round and square/rectangular backdraft damper line below provide effective, energy-saving solutions for the medium pressure and flow levels commonly found in commercial HVAC systems. 

Model Blade Style Mounting Min Size W x H Max Single Section W xH Blade Gauge
BRL
Blade Style: V-Blade
Mounting: H/V
Min Size: 6" x 14"
Max Single Section: 48" x 96"
Blade Gauge: .063" Alum.
Details
SHM
Blade Style: Medium Duty
Mounting: H/V
Min Size: 6" x 4"
Max Single Section: 36" x 72"
Blade Gauge: .064" Alum.
Details
SHN/SHL/SHC
SHN (non-linked)/ SHL (Dual Tie-Bar)/ SHC (Dual Tie-Bar & counter weights)
Blade Style: V-Blade
Mounting: H/V
Min Size: 6" x 6"
Max Single Section: 36" x 72"
Blade Gauge: .025'' Alum.
Details
SHF
Blade Style: Fabric
Mounting: H/V
Min Size: 5" x 5"
Max Single Section: 30" x 24"
Blade Gauge: N/A
Details
Pressure Relief Damper
Round/Rectangle
Details
RBD
Butterfly
Blade Style: Round Backdraft Damper
Mounting: Horizontal
Min Size: 5"
Max Single Section: 24"
Blade Gauge: 20ga.
Details
DVD-R
Blade Style: Single - Round
Mounting: H/V
Min Size: 4" dia.
Max Single Section: 24" dia.
Blade Gauge: 20ga.
Details