WICHITA, Kan. - Metal-Fab has earned an Underwriters Laboratories certification for its Dynamic Fire Dampers, allowing them to be installed into situations in which the HVAC system blower may continue to run during an alarm.

Incorporating stronger springs and locks, Dynamic Fire Dampers are able to close faster and with more force even if there is airflow in the system, according to the company.

The dampers are part of Metal-Fab's line of fire- and ceiling-radiation dampers for use whenever air distribution system ductwork penetrates a fire-rated barrier. The dampers include both gravity and dynamic models in a variety of sizes for specific requirements.