Greenheck has introduced two industrial control dampers for high temperature applications. Models HCD-324 and HCD-524 feature a high temperature blade design to control airflow and provide shutoff in industrial process systems. Model HCD-324 has a pressure rating up to 25 in. wg and velocity rating up to 5000 fpm. Model HCD-524 has a pressure rating up to 45 in. wg and velocity rating up to 5000 fpm. Both models have a temperature rating of -40 F to 1000 F. A variety of optional features make models HCD-324 and HCD-524 versatile, allowing the dampers to be tailored to the application. A range of actuators are also available for both models.