SS 333:2022

Specification for fire dampers


This Singapore Standard specifies the requirements for the materials, design, manufacture, performance, testing, marking, inspection and maintenance of fire dampers which may be of rectangular or circular face, of single or multi-blade or curtain construction, operate by gravity, spring or electric / pneumatic actuator (s).

This standard is also applicable to fire-smoke dampers.


The Redline version of this standard is available. Click here to know more or purchase a copy.

(Redline version of the document shows changes from the previous edition marked in colour. With the Redline you can quickly spot changed sections and tell specifically what has been changed from the previous edition, saving time and avoiding confusion).


Status Current
Edition 2022
No. of Pages 43
ICS Classification 13.220.50 Fire-resistance of building materials and elements
91.140.30 Ventilation and air-conditioning systems
Committee Building and Construction Standards Committee
Available for Purchase Global
Adoption -