Ruskin DIBD2 Fire Damper

Ruskin DIBD2 Curtain Type Fire Damper is a UL555 Classified Dynamic Fire Damper. It features:

• Vertical and horizontal closure spring operation for assured closure under air flow (fans on) in HVAC systems
• Galvanized steel construction
• UL555 1-1/2 Hour Rating
• BS476:Part20 4 hours Rating
• Maximum velocity 4,000 fpm
• Maximum 4” static pressure