Double-Track Dual-Curtain Inorganic Fabric Folding Fire Shutter is a specialized fire compartmentation system designed for large-span and complex building openings where conventional roller-winding fire shutters may be difficult to apply.
The system uses two independent inorganic fire-resistant curtain assemblies installed within parallel tracks. Unlike rolling fire shutters, the curtains are progressively folded and lifted beneath the upper structure, providing a flexible storage solution for large-span and special-shaped fire-rated openings.
Manufactured by Huadun Door Industry, a professional fire shutter manufacturer and OEM supplier, the system can be customized for straight, corner, L-shaped, U-shaped, curved and other project-specific fire separation layouts.

Large architectural openings can present challenges for conventional hinged fire doors and roller-winding fire shutters, particularly when the opening is very wide or follows a complex fire separation line.
The Double-Track Dual-Curtain Inorganic Fabric Folding Fire Shutter uses a folding-lift storage mechanism instead of winding the curtain around a large roller shaft. Two independent inorganic fire-resistant curtains are progressively folded and stored beneath the upper structure during normal operation.
Each curtain runs within its own guide track, creating a dual-curtain fire barrier rather than a single curtain with laminated layers. The flexible folding structure makes the system suitable for large-span fire compartmentation and special-shaped openings.
A dedicated fire shutter drive and control system manages lifting and emergency deployment. The controller can be integrated with the building fire alarm system so that the curtains automatically descend to the designated fire separation position when the required fire signal is received.
Huadun manufactures each custom folding fire shutter according to the opening dimensions, structural conditions, available installation space and project fire protection requirements.
Two independent inorganic fire-resistant curtain assemblies operate within two parallel guide tracks, maintaining the designed separation between the two fire barriers.
Instead of winding around a roller shaft, the curtains progressively fold and stack beneath the upper structure. This provides an alternative storage solution for large-span fire shutter applications.
The folding structure is suitable for oversized openings where conventional rolling systems may require large shafts and supporting structures. The system can be engineered according to the opening dimensions and structural conditions.
The folding system provides greater flexibility for complex fire compartment layouts.
Depending on the project design, the system can be customized for configurations such as:
Straight openings
Corner layouts
L-shaped openings
U-shaped openings
Curved openings
Other special-shaped fire compartment layouts
This makes the folding fire shutter suitable for complex architectural fire separation lines.
The curtain assemblies use inorganic fire-resistant textile and insulation materials designed for high-temperature fire protection applications. Final material composition and fire performance should correspond to the tested system configuration and project requirements.
A dedicated drive and control system provides reliable lifting and emergency deployment. The system is designed primarily for fire compartmentation and emergency closing, rather than high-frequency daily access.
The fire shutter controller can interface with the building fire alarm system. When the specified fire signal is received, both curtains automatically descend into the designated fire separation position.
Huadun provides custom fire shutter and OEM manufacturing according to:
Opening width and height
Available headroom
Structural beam position
Double-track spacing
Curtain separation
Folding and stacking requirements
Opening geometry
Drive configuration
Fire control requirements
Installation conditions
This allows the product to be adapted to complex construction projects rather than being limited to fixed standard dimensions.

● Two inorganic fire-resistant curtain assemblies
● Two parallel guide tracks
● Folding and lifting assemblies
● Upper stacking structure
● Bottom rails
● Supporting steel components
● Dedicated fire shutter drive
● Fire shutter control panel
● Fire alarm interface

The two curtain assemblies are lifted upward along their respective tracks.
As they rise, each curtain is progressively folded into sections and stored beneath the upper structure.
The opening therefore remains clear without requiring the curtain to be wound around a conventional roller shaft.
| Product Type | Specification |
| Product Name | Double-Track Dual-Curtain Inorganic Fabric Folding Fire Shutter |
| Product Category | Inorganic Fabric Folding Fire Shutter |
| Curtain Arrangement | Two independent curtain assemblies |
| Track Structure | Double-track system |
| Curtain Material | Multi-layer inorganic fire-resistant fabric assembly |
| Operation Direction | Vertical lifting and descending |
| Storage Method | Folding and stacking beneath upper structure |
| Operating Principle | Folding-lift system |
| Drive System | Dedicated fire shutter drive |
| Control System | Fire shutter control panel |
| Fire Alarm Integration | Available according to project control requirements |
| Opening Configuration | Straight / special-shaped according to engineering design |
| Large-Span Design | Customized according to project conditions |
| Fire Resistance Rating | 60 / 90 / 120 / 180 /240 minutes |
| Certification Standard | CCC /CE / UL fire protection standards available |
| Customization | OEM sizes, folding configurations and control solutions |
The Double-Track Dual-Curtain Inorganic Fabric Folding Fire Shutter is designed for buildings requiring large-span or complex fire compartment boundaries.
Commercial Buildings
Shopping malls
Commercial complexes
Department stores
Large retail centers
Mixed-use developments
Industrial & Underground Facilities
Factories
Manufacturing buildings
Large warehouses
Underground garages
Basement fire compartments
Large equipment areas
Large Open Architectural Areas
Hospitals
Transportation buildings
Exhibition centers
Public facilities
Large institutional buildings
Special Fire Protection Applications
Corner openings
L-shaped layouts
U-shaped layouts
Curved openings
Irregular fire separation boundaries
Other customized architectural configurations

Depending on project geometry and fire-control requirements, the system can be engineered with:
● Customized double-track spacing
● Customized dual-curtain separation
● Large-span folding configuration
● Straight-line arrangement
● L-shaped configuration
● U-shaped configuration
● Curved configuration
● Other engineered special-shaped layouts
● Customized upper stacking arrangement
● Fire alarm linkage interface
● Staged closing control
● Smoke detector interface
● Heat detector interface
● Temperature release device
● Emergency power configuration
● Customized fire shutter controller
● Customized steel supporting structure
● OEM branding and project-specific production
Final optional configurations should be confirmed according to the actual Huadun system design and project requirements.
It is a fire compartmentation system using two independent inorganic fire-resistant curtains installed within two parallel tracks. The curtains are lifted and stored through a folding mechanism instead of being wound around a roller shaft.
A rolling fire shutter winds the curtain around an upper roller or shaft, while a folding fire shutter progressively folds and stacks the curtain beneath the upper structure.
The folding mechanism provides an alternative storage method for large-span fire shutter applications, particularly where a conventional rolling system may require large roller assemblies or supporting structures.
Yes. The system can be engineered for corner, L-shaped, U-shaped, curved and other special-shaped fire compartment layouts, subject to project design requirements.
Yes. The control system can be configured to receive the required fire alarm signal and initiate the automatic emergency deployment sequence.
Yes. Huadun provides custom and OEM fire shutter manufacturing based on opening dimensions, structural conditions, folding configuration, installation space and fire-control requirements.