Fire-rated products such as roller doors, overhead doors, rolling counter shutters or personnel doors are designed to stop or delay the passage of fire between spaces. Fire rated roller doors, rolling shutters, and overhead doors are built with fire-rated certified materials, and include a mechanism which automatically lets the door or shutter drops once fire is detected. Fire-rated doors with an automatic drop mechanism should be professionally tested periodically in order to confirm the proper operation of the fire drop mechanism in the case of an emergency.