Ruskin model TFD80 heavy duty flanged-frame fire and smoke damper maintains the
highest standards of life safety for ventilation in modern tunnel transit systems.
The TFD80 is designed for effective operation during normal ventilation conditions
and provides a reliable means of smoke control during emergency situations. Ruskin's
TFD80 is designed to satisfy NFPA-130 & NFPA-502 standards, and also carries the
following certifications:
Southwest Research Institute Fire Tested to BS476:20