Damper, Roof Mount

  • Item # 4HX70
  • My Part #
  • Mfr. Model # 4HX70
  • Catalog Page # 2934
  • UNSPSC # 40101504
Damper, Roof Mount close

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Web Price $134.68 / each
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  • Shipping Weight 19.0 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

This model is a rear flanged gravity supply (intake) wall shutter. The frame and blades are mill finish aluminum with a galvanized reinforcement strip on each blade for added strength and counter balancing efficiency. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Ideal for use with belt-driven centrifugal wall ventilators. Recommended for vertical mount supply (intake) only. The blades will pivot at the bottom and fall with gravity to open. Spring-assist to close.

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Technical Specs

  • Item Backdraft Damper
  • Type Roof Mount, Exhaust
  • Damper Size (In.) 39 x 39
  • Overall Size (In.) 41 x 41
  • Flange Width (In.) 1
  • Max. Velocity (FPM) 2250
  • Construction Material G-90 Galvanized Steel Frame, Aluminum Blades, Stainless Steel Pivot Pins, Nylon Bushings and Galvanized Steel Tie Rods.
  • Use w/Dayton Ventilators 4HX89, 4HZ01
  • Includes Pre-punched Conduit Hole Knock-out and Felted Edges For Quiet Operation
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