Ruskin TFD80 Heavy Duty Combination Fire/Smoke Damper for Tunnel Ventilation
TFD80 Heavy Duty Combination Fire/Smoke Damper for Tunnel Ventilation
• Tested and Approved for BS476:20 for 4 hours • Optional stainless steel construction • Electric or pneumatic actuation • Optional stainless steel or silicon blade seals • Class I Leakage