Skip Content

48" Backdraft Damper / Wall Shutter, 48-1/2" x 48-1/2" Opening Required close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
Megaphone How can we improve our Product Images?

48" Backdraft Damper / Wall Shutter, 48-1/2" x 48-1/2" Opening Required

Price $230.25 / each

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 1C211
  • Mfr. Model # 1C211
  • UNSPSC # 40101504
  • Catalog Page # 3665
  • Shipping Weight 33.0 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

Use with direct- or belt-driven exhaust fans to prevent air backflow when the fan is off. Counterbalanced aluminum louvers have felted edges, a galvanized steel reinforcement strip, and stainless steel rivets. For general purpose applications.

View More

Technical Specs

  • Item Backdraft Damper / Wall Shutter
  • Fits Fan Dia. 48"
  • Overall Square 51"
  • Opening Required 48-1/2" x 48-1/2"
  • Frame Depth 3"
  • Open Depth 6-1/4"
  • Flange Width 1-1/2"
  • Mounting Hole Size Prepunched
  • Free Area 12.924 sq.ft.
  • Max. Velocity 2500 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 2
Megaphone How can we improve our Technical Specifications?

Compliance and Restrictions


Product availability based on selecting either shipping or pick up and a location. Dismiss

Replacement Parts

Need help finding replacement parts? Please use the list below or call 1-800-GRAINGER (472-4643)

Alternate Products

Alternate Search Terms

Customer Reviews

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.