Greenwood | Low Energy Bathroom Fan, Heat Recovery System, Whole House Ventilation

Fire Dampers

Fire rated duct sleeves and collars
A range of sleeves and collars to suite vertical or horizontal application and designed to protect ventilation duct that passes through fire rated ceilings or walls made from brick, block, hollow plaster board or concrete.
Features & Benefits
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Features and Benefits

 

Benefits of horizontal application


  • Contains intumescent material designed to expand inwards therefore crushing ducting and blocking the smoke and fire passage


  • Supplied in lengths of 100 or 200mm that can be easily cut with a knife to be installed level with the surrounding wall


  • Fire sleeves undergo fire resistance testing achieving integrity of 130 minutes in solid walls, 67 minutes in hollow walls and 4 hours in concrete or block walls


  • Available for all sizes of rectangular and round ducting systems offered in the Greenwood range that would commonly pass through a fire rated wall


  • Tested to BS476 part 22 (1987)


Benefits of vertical application


  • Consisting of a hinged, two part metal collar containing intumescent material, the unit has a quick release pin for easy fitting


  • Fitted lugs are supplied for simple attachment to most building materials

 

  • Available for all sizes of rectangular and round ducting systems offered in the Greenwood range that would commonly pass through a fire rated ceiling
  • Tested to BS476 parts 20 & 22 (1987)

 

  • Vertical collar is suitable for domestic application for use around PVC or steel duct


All options are tested to European standards EN1363/1 (2006) and EN1366/3 (2005)

 

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