Pottorff Backdraft Damper, BD-50 Model, 12 x 12 in Size, Leakage: 9.5 cu-ft/min/sq-ft at 3.5 in WG, 8.5 cu-ft/min/sq-ft at 3 in WG, 7 cu-ft/min/sq-ft at 2 in WG, 1250 ft/min, Formed Blade, Extruded Aluminum, Horizontal Upflow/Vertical Mounting, 3.5 in WG Differential Pressure, -25 to 150 deg F, 2 in L
Model
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BD-50
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Size
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12 x 12 in
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CFM Rating
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Leakage: 9.5 cu-ft/min/sq-ft at 3.5 in WG, 8.5 cu-ft/min/sq-ft at 3 in WG, 7 cu-ft/min/sq-ft at 2 in WG, 1250 ft/min
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Blade Type
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Formed
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Material
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Extruded Aluminum
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Mounting Type
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Horizontal Upflow/Vertical
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Pressure Rating
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3.5 in WG Differential
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Temperature Rating
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-25 to 150 deg F
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Length
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2 in
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- Backdraft damper employs gravity operated formed-style blades to restrict reverse airflow and to permit the forward flow of air in the intended direction
- The BD-50 damper may be-mounted vertically or horizontally in either exhaust or intake installations for low velocity and pressure applications
- Constructed with 2 x 1/2 x 0.06 in extruded aluminum channel frame and 24 ga formed aluminum blades
- Nylon bushings
- They are constructed for vertical-mounting and horizontal upflow
- Aluminum tie bar interconnects all blades for increased stability at higher velocities upto 1250 ft/min
- Blade edge open cell neoprene gaskets reduce leakage and noise
- Units supplied approximately 1/4 in under nominal duct dimension
- Neoprene blade edge seals
- Exposed, on-blade linkage
- 3/16 in Dia synthetic axles
- 5 years warranty
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Specification Sheet
https://assets.unilogcorp.com/267/ITEM/DOC/Pottorff_W_11902_Specification_Sheet.pdf