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18" Backdraft Damper / Wall Shutter, 18-1/2" x 18-1/2" Opening Required close
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18" Backdraft Damper / Wall Shutter, 18-1/2" x 18-1/2" Opening Required

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Price $42.25 / each

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  • Item # 2C521
  • Mfr. Model # 2C521
  • UNSPSC # 40101504
  • Catalog Page # 3667
  • Shipping Weight 5.8 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

The shutters open automatically when the fan is activated. The 26-ga. mill-finish aluminum louvers are felted on the leading edge for quiet operation. Additional features include nylon bushings and stainless steel pivot pins.

Note: Do not use with vaneaxial or tubeaxial fans.

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Technical Specs

  • Item Backdraft Damper / Wall Shutter
  • Fits Fan Dia. 18"
  • Overall Square 21"
  • Opening Required 18-1/2" x 18-1/2"
  • Frame Depth 2-1/4"
  • Open Depth 6-1/4"
  • Flange Width 1-1/2"
  • Mounting Hole Size Prepunched
  • Free Area 2.051 sq.ft.
  • Max. Velocity 2000 FPM
  • Mounting Position Vertical
  • Blade Material Mill Finish Aluminum
  • Construction Material G-90 Galvanized Steel Frame and Tie Rods
  • For Use With Vertical Mounted Exhaust Fans
  • Number of Panels 1
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