IBD (Curtain Type)

2hr Rated Curtain Fire Damper

  • 72°C Fusible Link Operated Only
  • Minimum Size 100mm x 100mm
  • Maximum Size Vertical 1200mm x 1200mm
  • Maximum Size Horizontal 900mm x 900mm
  • Extended Shaft Option
  • 30mm Flanges
  • Horizontal or Vertical Installation
  • Inspection Port for Fusible Link

Technical Specifications


Electrovent IBD Curtain Fire Dampers are fire protection products used in HVAC installations to prevent the spread of fire inside ductwork through fire-resistance rated walls and floors.


The IBD frame and interlocking blades are manufactured from galvanised steel.


Every IBD is fitted with a fusible link designed to close the fire damper when duct temperature exceeds 72˚C. Blades can be installed inside the airstream (Type A) or outside of the airstream (Type B). Blades close under gravity for vertical installation, or can be fitted with closure springs for horizontal installation in floors. Spigots can be fitted for spiral duct installation.


Minimum size: 100mm (w) x 100mm (h)

Maximum verticle size in one section 1200mm (w) x 1200mm (h)

Maximum horizontal size in one section 900mm (w) x 900mm (h)

Sizes exceeding maximum are combined in sections.

Casing depth is 125mm.

Leading Manufacturer of Airtight Doors, Fire, Smoke, Control and Non Return Dampers

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