The FD-150X series is for use in walls, floors, and partitions with fire-resistance ratings less than three hours. This model has an integral sleeve. Static-rated-fire dampers used in HVAC systems that automatically shut down in the event of a fire emergency.
Temperature: Up to 212°F (100°C)
FD-150x12 has integral 12-inch sleeve (305 mm)
FD-150x16 has integral 16-inch sleeve (406 mm)
