Tunnel Dampers
HTD-630
HTD-636
Features
- Heavy duty industrial air control damper
- Qualified for use in tunnel and transit systems
- Double flanged with mechanically fastened silicone blade seals and stainless steel jamb seals
- Fabricated airfoil
- Up to 24 in. wg pressure
- Up to 4,000 fpm Velocity
Features
- Heavy duty industrial air control damper used in tunnel
- Fire-rated fabricated airfoil blade type
- Up to 24 in. wg pressure
- Up to 4,000 fpm velocity
- 8 million reverse cycles at 24 in. wg
- Approved for fire partitions of four hours or less where British Standards are required