Model VFD-35R

3 Hour - Static Fire Damper
Round Butterfly Blade

The VFD-35R fire damper employs round butterfly blades for point-of-origin control of fire in static HVAC systems. The VFD-35R may be installed in vertical walls or partitions with fire resistance ratings up to 4 hours.

Standard Construction

Frame: 22 ga. (0.85) galvanized steel.

Blades: 22 ga. (0.85) galvanized steel - round butterfly.

Fire Closure Device: Fusible link.

Fire Closure Temperature: 165^oF (75^oC)

Minimum Size: 6" Ø (152 Ø)

Maximum Size: 20" Ø (508 Ø)

Ratings

UL 555 Fire Resistance Rating: 3 hour (vertical)

UL HNLN: Ventilation Duct Assemblies