BÖLDT - By Window Techs
Fire curtain deployed in atrium

Fire Curtains

A complete automatic fire curtain range

Every component, from the steel head box to the final fabric stitch, is manufactured in-house at our Jaipur facility. Tested to EN 1634-1 and EN 12101-1, independently verified by Efectis and TÜV SÜD. Marking and DoP on request.

• Our range

Fire and smoke curtains

Automatic, accordion, egress and fixed configurations, tested to EN standards and manufactured in-house.

Automatic Fire Curtains, deployed
Tested to EN 1634-1

Automatic Fire Curtains

Electric-motor-held, gravity-drop fire curtains remain concealed inside a compact ceiling head box until deployed by fire alarm or power loss. Descends under gravity at a controlled rate to form a fire-resistant barrier tested and certified for up to 240 minutes. Gravity fail-safe means deployment occurs on total power failure - no battery backup or manual release required.

Fire CurtainEN 1634-1NBCS 2026 Type 1/2
Orientation
Vertical
Integrity
Up to 240 min
Radiation
Up to 120 min
View specification
Automatic Smoke Curtains, deployed
EN 12101-1, class on request

Automatic Smoke Curtains

Motorised smoke curtains contain and channelise smoke in the critical early stages of a fire - protecting escape routes, maintaining visibility and directing smoke towards extraction units. Gravity fail-safe deployment as standard.

Smoke CurtainEN 12101-1
Orientation
Vertical
Integrity
Class on request
View specification
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
View specification
Egress Fire Curtains, deployed
Deflects under human contact

Egress Fire Curtains

Required for escape routes - doorways, corridors and exit pathways - where the curtain must provide a fire barrier while still allowing safe passage during evacuation. Fabric deflects under human contact without loss of fire protection.

Fire CurtainEN 1634-1
Orientation
Vertical
Integrity
Up to 120 min
Radiation
Up to 30 min
View specification
Fixed Fire Curtains, deployed
Non-retractable

Fixed Fire Curtains

Non-retractable fire-rated fabric barriers for openings where a fixed boundary is required. Same specification as automatic fire curtains, without the motorised cassette.

Fire CurtainEN 1634-1
Orientation
Vertical, fixed
Integrity
Up to 240 min
Radiation
Up to 60 min
View specification

• Compare

Product matrix

Compare fire and smoke curtains by orientation, standard and rating in a single view.

ProductTypeStandardsOrientationIntegrityRadiation
Automatic Fire CurtainsFire CurtainEN 1634-1, NBCS 2026 Type 1/2VerticalUp to 240 minUp to 120 min
Automatic Smoke CurtainsSmoke CurtainEN 12101-1VerticalClass on requestNot rated
Accordion Fire CurtainsFire Curtain, Smoke CurtainEN 1634-1, EN 12101-1Multi-sided (Accordion)Up to 240 minUp to 60 min
Egress Fire CurtainsFire CurtainEN 1634-1VerticalUp to 120 minUp to 30 min
Fixed Fire CurtainsFire CurtainEN 1634-1Vertical, fixedUp to 240 minUp to 60 min

• Standards

Tested to Indian and European standards

NBCS 2026, Clause 4.5.2.1, sets out fire curtain performance types directly. BÖLDT curtains are tested to these parameters and to EN 1634-1 and EN 12101-1 for projects that require international specification standards. CE marking and Declaration of Performance are available on request.

E

Integrity

Resists flame and hot gas passage, 120 min

EW

Radiation control

Heat transfer capped at 15 kW/m² at 1 m

EI

Insulation

Limits far-face temperature rise, +140°C max

Sa

Smoke control

Leakage capped at 3 m³/m/h at 25 Pa

EN 1634-1

Fire Resistance of Door and Shutter Assemblies

Governs fire resistance testing of door sets, shutter assemblies and openable windows - including fire curtain systems. Curtains are evaluated on their ability to maintain integrity and control fire and smoke spread across openings for defined periods.

EN 12101-1

Smoke and Heat Control Systems

Defines performance requirements for smoke and heat control systems in buildings. Curtains tested to EN 12101-1 demonstrate measurable performance in real fire scenarios, supporting life safety strategy and regulatory compliance.

EN 15269-11

Extended Application of Fire Resistance Test Results - Curtain Assemblies

Provides the framework for extending fire test results across a defined range of curtain sizes, widths and installation conditions, rather than requiring independent testing for every configuration.

EN 13501

Fire Classification of Construction Products

Translates fire test results into clearly defined performance ratings - integrity (E), radiation (W) and insulation (I) - giving specifiers, consultants and authorities a transparent, universally understood classification.

View full certification detail

Specify fire curtains for your next project

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

Request a Quote