Hart & Cooley 24"x24" Horizontal Airflow Damper

Hart & Cooley 75H1 24"x24" Horizontal Airflow Damper. This fire damper is device installed to be installed in horizontal airflow systems. This Damper is designed to close automatically upon detection of heat, and prevent smoke from entering the system. Having a fire separated system helps to maintain the integrity of the building protection and of its flame prevention passage.