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BOSS Intumescent Fire Damper

BOSS Intumescent Fire Dampers allow the bi-directional movement of air through fire rated walls and floors. In a fire situation the slats in the damper intumesces and swells to many times the original size, closing the damper and forming a solid fire barrier. They are simple to install, easy to identify, and economical to maintain. The BOSS Damper has slats of foil-covered intumescent material with a rigid steel frame.

Key Features
  • 2 hours fire rating
  • Rigid zinc-coated rigid steel frame
  • Allows high volume air flow
  • Suited to steel ducts
  • No moving parts to maintain
  • Available in square and round shape
  • Large and custom sizes available
Categories / Ranges
Fire Safety Passive Fire
Scope of Use

A range of stock sizes is available from 100mm square to 600mm square and any configuration in between. Special sizes up to 1200mm are also available..

Grill: 43mm deep

Slats: 6mm thick and 14mm between slats, giving 70% free area excluding the perimeter frame to allow maximum air flow.

Rectangular sizes:

  • 150mm x 150mm, 100mm x 200mm, 200mm x 200mm, 100mm x 300mm, 300mm x 300mm 200mm x 300mm, 450mm x 450mm 200mm x 600mm, 500mm x 500mm 300mm x 600mm, 600mm x 600mm

Round – With Sleeve or Without Sleeve

  • 100mm, 125 mm, 150 mm, 200mm, 250 mm, 300 mm diameter

Fire Door Damper Kits – complete with 2 x Grills

  • 450mm x 450mm, 600mm x 300mm

Other Options:

  • Cased Dampers, Kilargo Hi Flow Dampers, 
Statement of Building Code Compliance
  • Fire tested and AS 1530:4 for up to 2 hours fire integrity in plasterboard, concrete or masonry walls and  concrete floors, and in steel duct spigots penetrating those walls or a concrete floor.
  • Through floors: 2 hours integrity and 1 hour insulation on the duct spigot (-/120/60).
  • BS476:20-22 tests by convention may be applied to walls, floors being considered the more rigorous orientation in a fire test.
  • Also tested to AS/NZ 1668:1, with closure in less than 120 seconds, and AS 1682:1.
Data Sheet

A leading supplier of building materials to the commercial industry-including ceiling panels, aluminium partitioning, acoustic & thermal insulation, whiteboards and passive fire solutions.

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