Air/Dynamic Backdraft Dampers

Standard Features

• Full, Positive Opening
• Less Power Rob; Less Fan Power Necessary
• Blade Linkage is on the Side
• Clean, Fresh Appearance Extruded Aluminum
• Counterbalanced to provide True Pressure Relief
• Noiseless Nylon Bearings
• Less Maintenance, Greater Economy
• Sparkproof

Recommended For

• Exhaust duct systems
• Exterior wall louver exhaust
• Use with louvers on diesel-powered stand-by generators
• Ceiling vents
• Duct systems to control airflow direction
• Transfer grills
• Roof outside air in-take
• Pressure relief

Downloadable Literature

• BSL - 2" Deep, Lighweight, Aluminum
• BS50 - True Round, Aluminum
• BS51/52/53 - 7½" Deep, Round, Galvanized Steel, Aluminum or Stainless Steel
• BS55 - 4" Deep, Single Thickness Blade, Aluminum
• BS66 - 4" Deep, Single Thickness Blade, Steel
• BID4 - Heavy Duty, Tear Drop Blade, Steel
• BID9 - Heavy Duty, Tear Drop Blade, Steel

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