WXHU Circular Smoke Control

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  • WXHU Circular Smoke Control
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​WXHU is a circular smoke control damper for smoke and heat evacuation systems for single compartment, The WXHU smoke control damper is suitable for vertical and horizontal installation in single compartment smoke duct evacuation systems with a maximum temperature of 600 deg C for 2 hours, with smoke leakage class S at 1500 Pa negative pressure. The WXHU circular smoke control damper casing is made of galvanised steel with Lindab Safe connection with leakage Class C according with EN 1751.

Depending on the relay response required the WXHU circular smoke control damper has two different motorised versions: Type AA (Automatic Activation) and Type MA (Manual Activation with fire rated motor covering box). This smoke damper is CE marked and certified according to EN 12101-8, classified according to EN 13501-4 and tested according to EN 1366-10. 

Intended Use: 

  • Extract smoke for 2 hours during the fire
  • Create a non-smoke layer
  • Reduce temperatures during the fire
  • Protect the property 

Related Documents

There are no softwares available for download for this particular product.

WXHU Circular Smoke Control Damper ​Standards



  • EN 13501-4
  • Fire Classification of Construction Products and Building Elements
  • Classification using data from fire resistance tests on components of smoke control systems


Test Method

  • EN 1366-9
  • Fire Resistance Tests for Service Installations Single Compartment Smoke Extraction Ducts



  • EN 12101-7
  • Smoke and Heat Control Systems
  • Smoke Duct Sections