Motorized Backdraft Damper: 30 in For Fan Dia, Steel, Vertical or Horizontal, 31 in For Opening Square Size, 100/240V AC

Item # 905K276

$338.18 Each
Frame Material: Steel

Product Specs

Mounting Orientation: Vertical or Horizontal
For Fan Diameter: 30 in
For Opening Square Size: 31 in
Overall Square Size: 33 in
Flange Width: 1 1⁄2 in
Supply/Exhaust: Supply or Exhaust
Voltage: 100/240V AC
Frame Material: Steel
Accessory Type: Motorized Damper
Application: Exhaust Applications; Intake Applications
Blade Metal Thickness: 16 ga
Closure Mechanism: Motorized
Cord Length: 3 ft
Current: 5 VA
Display Sell UOM: EA
Electric Frequency: 60 Hz; 50 Hz
Electrical Connection: Wire Leads
Features: 3,500 fpm Max Velocity; Welded-Corner Construction and Factory-Installed Motors With End Switch; Prepunched Mounting Holes; Flanged Frames for Flush Mounting to Exterior or Interior Surfaces; Features Center-Pivoting Louvers for a Full 90° Opening; Stainless Steel Jamb Seals to Help Minimize Light, Air, and Moisture
For Use With: Fans
For Use With Fan: Mfr. No. 7M7Z1
Frame Less Flange: 30 sq ft
Frame Metal Thickness: 14 ga
Free Area: 5.679 sq ft
Includes: Spring Return Actuator With End Switch; Factory Installed Power Open
Motor Extension Bracket: 10.25 in
Number of Panels: 1
Number of Pieces: 1
Operation: Spring Return; Power Open
Overall Height: 9 in
Overall Length: 33 in
Overall Width: 33 in
Phase: Single
Power: 2.5 W
Power Source: Corded Electric
RoHS Compliant: Yes

Compliance and Restrictions

Country Of Origin

  • USA

About Motorized Backdraft Dampers

Use these motorized dampers with a thermostat or building automation system to automatically regulate hot or cold airflow in supply or exhaust applications. They are ideal for use where dampers are out of reach, where they are required to work against the flow of air, or where manual control is impractical.

These dampers work in low pressure applications with sidewall propeller fans, sidewall exhaust fans, and centrifugal utility fans.