Damper, Backdraft MPN:4HX77

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Brand: Dayton
Part #: 4HX77
UPC: 190735326015
SKU
510-G1225524
Regular Price $136.91 Special Price $97.79

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Damper, Backdraft

The Dayton Backdraft Damper is a reliable solution for preventing backdrafts and maintaining a safe and healthy indoor air quality. Its compact design fits easily into square ducts, making it perfect for a wide range of applications, including residential and commercial HVAC systems. By preventing backdrafts, the damper helps to reduce energy losses, minimize air leaks, and prevent moisture damage. Its durable aluminum construction ensures long-lasting performance, while its easy installation makes it a convenient choice for professionals and DIYers alike. Suitable for use in tight spaces, this damper is a must-have for any HVAC project.

Top product features:

  • Aluminum construction provides durability and resistance to corrosion
  • Designed for backdraft applications to prevent air leaks and maintain indoor air quality
  • Maximum air velocity of 2250 fpm allows for efficient airflow management

Top product applications:

  • Backdraft
  • Nominal Duct Diameter Not Applicable
  • Square
17.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 17 3/4 in, Rough Opening Diameter 15 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 12 in, For Duct Shape Square, Free Area 1.2 sq ft, Overall Width 17 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in

Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 18.40
  • Package Width: 2.00
  • Package Height: 18.80
  • Package Weight: 3.95
Product info last updated on March 15, 2026 2:09am UTC Category: Ventilation
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In stock