Thor Duct®

Fire Ductwork

Thor Duct® Fire Ductwork is suitable for applications where Integrity (E) is required for period of up to 120 minutes. For Insulation (I) requirements protection is also provided using the tested insulation package for periods up to 120 minutes. Thor Duct® is ideal for use in a pressurisation system, and where the use of fire dampers is not a viable option. Thor Duct® will maintain the compartmentation rating that fire dampers would otherwise provide.


Thor Duct® is tested to EN1366-1, horizontal and vertical, fire types A and B, classified EN13501-3, product standard prEN15871. Thor Duct® has also tested to EN1366-1 under the standard EN15882-1, allowing for a maximum size of 2500x1250 mm.

Looking to Specify?

All Thor Duct® products are correctly tested and compliant across all European codes. If you would like an inhouse CPD, please contact us.

CPD Request ➝

Passive ducts, specified as fire ducts, are tested to EN1366-1. Thor Duct® Fire Ductwork meets all the current regulations and is the most suitable choice. Thor Duct® Fire Ductwork has been tested with insulation, and is classified to standard EN13501-3.


Where fire resisting ductwork is required, we recommend that both the (E) Integrity and (I) Insulation performance of a fire compartment barrier are maintained.


Thor Duct® is suitable for use in protected lobbies and escape routes meeting the requirements of BS9999:2017

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. Thor Duct® is your sustainable partner, actively reducing the amount of energy required in construction, creating a low carbon footprint and a 99% recyclable product.

Compliance with

EN Code


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


✓ EN1366-1 Testing

✓ EN13501-3 Classification


Fully Tested



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 available up to 2500x

    1250 mm

✓ Round up to 1000 Ø.

✓ Performance of Ø ducts

    differs from square ducts


Manufacturing Standards

  • Thor Duct® is manufactured from Galvanised Steel, and uses flanges and stiffeners, without paints or coatings.
  • 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 licensed manufacturing location has a factory production control (FPC) in placed to ensure exacting standards of manufacture.

Installation Standards

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. 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.

Share by: