The DIBD230 is a UL555 Classified Curtain Type Dynamic Fire Damper. It features:
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DIBD20, 40, 60 fire dampers can be installed vertically in walls or horizontally in floors with fire resistance ratings of less than 3 hours. The DIBD20, 40, 60 carry an 11/2 hour UL fire damper label and are classified as a dynamic damper for use in HVAC systems that remain in operation during a fire.
DIBD230, 430, 630 can be installed vertically in walls or horizontally in floors with fire resistance ratings of 3 hours or more. The DIBD230, 430, 630 carry a 3 hour UL fire damper label and are classified as a dynamic damper for use in HVAC systems that remain in operation during a fire.
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