WH45 Circular Fire Damper

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​Fire Damper WH45 is a circular fire damper with 40mm thick closing blade made from refractory material for air duct system that penetrate fire resistance walls or floors. This circular fire damper has casing leakage performance class C according to Standard EN:1751:2014 Section C.3.

WH45 Circular Fire Damper prevents fire and smoke from spreading through the air duct system. WH45 circular fire damper is tested and classified in accordance with EN 13501-3 and EN 1366-2 with 500 Pa negative pressure and it is CE marked in accordance with EN 15650.

Fire damper WH45 focuses on aeraulic and acoustical performance and it is optimised for medium and big diameter ducts.

WH45 fire damper is equipped with various different mechanisms which are completely outside the wall allowing them to be easily interchangable even after installation.

Related Documents

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Characteristics of WH45 Circular Fire Damper

  • Casing made from galvanised carbon steel
  • Air duct connection gasket - Lindab safe
  • Intumescent sealing gasket
  • 40mm thick closing blade made from refractory material
  • Opening/closing mechanism with IP42 protection box (IP54 for motorised version)
  • Internal intumescent gasket for hot smoke seal
  • Lip seal on blade border for cold smoke seal

European Standards and Certification

  • CE Certification -  EN 15650
  • Test - EN 1366-2
  • Classification - EN 13501-3
  • Thermal Fuse Reliability - ISO 10294-4
  • Airtightness - EN 1751
  • Resistance to Corrosive Environments - EN 60068-2-52
  • CE Certificate of Constancy of Performance
  • German Approval
  • NF Certification
  • Swiss Approval
  • Swedish Approval
  • Fire Resistance Classification According to EN 13501-3-2005