BÖLDT - By Window Techs
Accordion Fire Curtains, deployed

Motorised, gravity fail-safe

Accordion Fire Curtains

For openings a standard single-drop curtain cannot address - wide spans with structural obstructions, column-interrupted facades, or complex atrium boundaries. Multiple folding panels deploy laterally or vertically across irregular openings, sealing the full perimeter without gaps.

Fire CurtainSmoke CurtainEN 1634-1EN 12101-1
Orientation
Multi-sided (Accordion)
Integrity
Up to 240 min
Radiation
Up to 60 min
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How it works

Sealing irregular openings

Accordion systems fold around columns and corners so wide, interrupted openings get a continuous fire or smoke barrier without multiple independent rollers leaving gaps.

FIG. AC - ACCORDION FIRE CURTAIN / PLANMULTI-SIDED SEALOPENING PERIMETERC1C2C3Head trackAccordion fold at column returnCONTINUOUS MULTI-SIDED PATHSeals around structural columns without residual gaps · SCHEMATIC - NOT TO SCALE
ConfigurationMulti-sided / folding
FabricFire-rated curtain fabric
DeploymentMotorised, gravity fail-safe
IntegrityUp to 240 minutes
StandardsEN 1634-1 / EN 12101-1
Use caseWide / obstructed openings
Head trackSteel, site-coordinated
Bottom sealWeighted bar / threshold seal
CertificationEN tested; marking and DoP on request
Power dependencyNone for closure

• Models

Fire curtain models

ModelMax WidthMax DropTest StandardIntegrity (E)Radiation (EW)
WFC-016 m25 mEN 1634-1240 min60 min
WFC-02Unlimited25 mEN 1634-1240 min60 min
WFC-03UnlimitedUnlimitedEN 1634-1240 min60 min

Head Box & Guide Rail

Material: galvanized steel. Finish: G.I. or powder coated.

Fabric

Glass fabric with reinforced stainless steel wire. Finish: aluminium pigmented PU coating.

Need a specification for your project?

Our technical team can help with curtain sizing, drop configuration and BMS integration.

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