Lindab Thor Duct ® Fire Ductwork

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Lindab Thor Duct ® Fire Ductwork helps maintain pressurisation systems and ensures compartmentation. The integrity of the duct and its ability to function must be maintained in the event of a fire.

Passive ducts, specified as fire ducts, are tested to EN 1366-1. Lindab Thor Duct ® Fire Ductwork meets all of these requirements and is the most suitable choice. Lindab Thor Duct ® Fire Ductwork has been tested with insulation, and is classified to standard EN 13501-3.

Lindab Thor Duct ® Fire Ductwork is a non-coated system, suitable for installation in multi-compartment, single compartment, stud wall, solid wall, and aerated concrete floors. A comprehensive set of support bracketry is provided. Penetration seals guidance is provided with detailed drawings.

Compliance with EN Code

Lindab Thor Duct ® Fire Ductwork is comprehensively tested to satisfy all code requirements.

  • EN 1366-1 Classification
  • EN 13501-3 Testing

Fully Tested

Lindab Thor Duct ® Fire Ductwork tested with:

  • Pressure -500 PA
  • Horizontal and vertical orientations
  • Fire types A and B
  • Leakage class S (below 10m³/m²/hr)

Installation

All fixing and support components fully tested to EN standards.
More information on installation standards below.

  • Stud partition
  • Block wall
  • Concrete floors
  • Penetration seal details provided

Product Sizes

  • Square standard maximum size of 1250 X 1000
  • Round up to 1000 Ø
  • XL up to 2500 X 1250

Become a Lindab Thor Duct ®
Licensed Manufacturer

Become a Lindab Thor Duct ® Licensed Manufacturer and add EN tested and certified ductwork.

Become a Licensee

Looking to Specify?

All Lindab Thor Duct ® products are fully tested and compliant across all international codes. 

Additional Information

  • Lindab Thor Duct ® is manufactured from Galvanised Steel, and uses flanges and stiffeners, without paints or coatings.
  • Lindab Thor Duct ® is insulated using a calcium magnesium silicate blanket.

Both the product and the insulation have been tested as a system in accordance with test standards which includes access doors, silencers and bracketry.

All tests were conducted in EOTA approved laboratories, and each licenced manufacturing location has a factory production control (FPC) in placed to ensure exacting standards of manufacture.

You can be 100% sure that your installation has been properly managed and is fit for purpose when called upon in the event of a fire.

  • Penetration seal detail is provided for floors and walls. Lindab Thor Duct ® is suitable for installation in flexible walls (Plasterboard) and aerated concrete floors, having been tested in both.
  • Our installers in Ireland and the UK comply with local guidance and are all members of third party certification schemes.
  • In mainland Europe, installers comply with certification schemes where available.

Fully Certified & Accredited

Lindab Thor Duct ® has been tested to the latest EN standards and as required by law, provides CE marking on products where a harmonised standard exists.

accreditation CE
accreditation Certifire

Whilst Lindab Thor Duct ® makes every effort to reflect the industry wide understanding of fire resisting duct standards, we do not suggest replacing a thorough research of CEN documents with our Blog posts.  We make every effort to be accurate and true, and, as the passive fire protection industry experience and knowledge grows, we may update our guidance to reflect this.  The design, selection, and supervision of fire strategies must always be managed by qualified Fire Engineers.

[email protected]

Ireland – Lindab (Irl) Ltd.

U2B, Nangor Road Business Park, Nangor Road, Dublin, D12 W97P

UK – Lindab UK

Units 9 & 10, Carousel Way, Riverside Business Park, Northampton, NN3 9HG

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Thor Duct ® was formerly known as Safe 4 ® Fire Duct in the UK and Ireland.

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