Maintenance, installation and repair of fire doors and frames, fire dampers, smoke dampers, fire barriers, smoke barriers, fire and smoke detection and suppressions systems and equipment, fire alarms, and fire extinguishers, including all hardware, parts, and accessories of each of the foregoing

Maintenance, installation and repair of fire doors and frames, fire dampers, smoke dampers, fire barriers, smoke barriers, fire and smoke detection and suppressions systems and equipment, fire alarms, and fire extinguishers, including all hardware, parts, and accessories of each of the foregoing