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Backdraft Damper,Vert/Horiz Mtg,29 3/4Sq close
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Backdraft Damper, Vert/Horiz Mtg, 29 3/4Sq

Price $88.35 / each

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  • Item # 3HHL8
  • Mfr. Model # 3HHL8
  • UNSPSC # 40101504
  • Catalog Page # 4104
  • Shipping Weight 7.86 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

Technical Specs

  • Item Backdraft Exhaust Damper
  • Type No Flange, Horizontal or Vertical Mount
  • Damper Size (In.) 29-3/4 x 29-3/4
  • Overall Size (In.) 29-3/4 x 29-3/4
  • Max. Velocity (FPM) 2000
  • Construction Material G-90 Galvanized Steel Frame and Aluminum Blades
  • Includes Pre-punched Conduit Hole Knock-out and Felted Edges For Quiet Operation
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Compliance and Restrictions



This model is a non-flanged exhaust backdraft damper. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Spring assisted to allow blades to open quickly. Ideal for use in roof curbs, duct work, or wall collars when using a fan or power roof ventilator.

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  • 3HHL8

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