For your information

You are being redirected to one of our divisional subsites which contains more detailed information on the required division. To navigate back to the main Invicta Group site, please click the link found in the footer at the bottom of the page.

4 Hour Fire Rated Ductwork

240 Minute Fire Rated Ventilation Systems With Flexible Configurations

Quick Quote

Contact Benn Larkin Anand Raghavan Ben Tan Anand Raghavan Anand Raghavan Our USA Office

Home Systems Ductwork & Ventilation 4 Hour Fire Rated Ductwork

4 Hour Fire Rated Ductwork

Fire Rated Ductwork

Durasteel 4 hour fire rated ductwork is a tested and certified high performance ventilation system that can be constructed to various sizes in 4, 3, 2 and 1-sided configurations and in both horizontal and vertical orientations, offering total flexibility.

The systems are lightweight and space-spacing, and offer up to 4 hours fire rating in both directions (Type A and Type B) in accordance with BS476: Part 24, to provide natural ventilation or mechanically forced ventilation, including hot smoke extraction in the event of a fire.

As a completely dry installation consisting of angle framework with 9.5mm Durasteel sheets fixed to the outside,  the systems can be re-worked on site to accommodate difficult site conditions and offer unique flexibility that other prefabricated duct systems cannot. The systems are designed bespoke in order to achieve the required cross-sectional area of airflow at the specified pressure and can accommodate foot traffic inside to allow for maintenance access.

 

Share/Like this page

Accreditations & Affiliations

SpecUp - System Specification Wizard

Answer the 5 short questions below to receive your recommended Durasteel system specifications. Hover over the ? icons for a brief explanation.

Question 1/5

Type of system required?

Question 2/5

Fire rating required?

Question 3/5

Fire integrity-only or integrity and insulation?

Question 4/5

Fire attack risk from one side or both sides of the system?

Question 5/5

Blast rating required in addition to fire rating?

Creating your results page

Thanks for completing the SpecUp, you’ll be redirected to your results shortly.

Click here if you aren't redirected after a few seconds