Curtain Fire Dampers.

The fire dampers manufactured by A J Services are manufactured in the UK and designed to work in ductwork systems which have varying velocities of airflow. The main purpose of fire dampers is to prevent the spread of fire through ductwork systems, which is achieved through a fusible link element, triggered at 72 degrees. Currently there are five different Fire damper models: blades in airstream (rectangular duct), blades out of airstream (rectangular duct), blades out of airstream (spiral/circular duct), induct/internal (rectangular duct) MFD/single blade (spiral/circular duct). These can have factory fitted installations of drywall frame, fire curtain frame, hanging cleats and HEVAC frame.