ISO 6944:1985
ISO 6944:1985


Specifies a method of test and criteria for vertical and horizontal ducts under standardized fire conditions. The general purpose is to measure the ability to resist the spread of fire from one fire compartment to another without the aid of fire dampers. Is applicable to vertical and horizontal ducts with or without branches, taking into account joints, air supply and exhaust openings and suspension devices etc.

General information 

  •  :  Withdrawn
     : 1985-12
  •  : 1
     : 21
  •  : ISO/TC 92/SC 2 Fire containment
  •  :
    13.220.50 Fire-resistance of building materials and elements
    91.140.30 Ventilation and air-conditioning systems

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.