Dynamic

DIBD2 fire dampers can be installed vertically in walls or horizontally in floors with fire resistance ratings of less than 3 hours. The DIBD2 carries a 1-1/2 hour UL fire damper label and is classified as a dynamic damper for use in HVAC systems that remain in operation during a fire.

DIBD23 fire dampers can be installed vertically in walls or horizontally in floors with fire resistance ratings of greater than 3 hours. The DIBD23 carries a 3 hour UL fire damper label and is classified as a dynamic damper for use in HVAC systems that remain in operation during a fire.

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DYNAMIC DIBD2-DIBD23

The DIBD2 and DIBD23 are UL555 Classified Curtain Type Dynamic Fire Damper. It features: 1.5 Hours & 3-Hour Rating. Vertical and horizontal closure spring operation for assured closure under air flow (fans on) in HVAC systems. Galvanized steel construction. Maximum velocity 4,000 fpm. Maximum 4” static pressure.




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