Privacy Policy

Effective Date: August 25, 2026

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Changes to This Policy

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Contact Information

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Email: privacy@pottorff.com
Phone: (555) 123-4567
Address: 123 Main Street, City, State 12345

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Pottorff > Backdraft Dampers > Backdraft Dampers > Medium to High Velocity > BD-103
Backdraft Dampers
DOCUMENT CART

Model BD-103

Backdraft Damper
Extruded Style Blade

BD-103 industrial backdraft dampers employ heavy-duty airfoil blades, a rugged flanged frame, designed to allow forward airflow in the intended direction and prevent back-flow. It features a field adjustable counterbalance assembly and is ideal for high pressure and velocity applications.

BD-103 Extruded Style Blade

Standard Construction

Frame: 8" × 2" × 14 ga. (203 × 51 × 2) galvanized steel channel
Blades: 0.080 (2) Aluminum airfoil
Axles: 3/4" (19) diameter plated steel
Linkage: 3/16" × 3/4" (4.7 × 19) plated steel tie bars and 3/8"
(10) stainless steel pins concealed in frame
Bearings: Bronze sleeve bearing, press fit into frame
Lifting Lugs: 7/8" (22) diameter, one on each jamb of frame
Minimum Size: 6" × 6" (152 × 152)
Maximum Size: Single Section: 60" × 96" (1524 × 2438)
Multiple sections: 120" × 96" (3048 × 2438)

Ratings

Velocity: Up to 5,500 fpm (27.9 m/s)
Temperature: –40°F to 250°F (–40°C to 121°C)
Pressure: Up to 15.0 in.wg. (3.7 kPa)

Click to view or check box to add to cart
BD-103 Product Sheet
BD-103 CSI Specification
BD-103 Revit File
BD-103 Installation Instructions
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