BST/ FBST Special Line Automatic Curved Sliding Doors

Curved sliding doors manufactured, to order, as concave and convex versions, and used in half circle, full circle, oval and segmental configurations.

FBST Special Line automatic curved sliding doors can be supplied with a redundant operator, an additional control unit for safety purposes, and a special radar motion detector, making them suitable for use on emergency exits and escape routes.

Specification data

Product Reference

BST Special Line

FBST Special Line


Half circle, concave

180°; one set of symmetrical doors.

Half circle, convex

180°; one set of symmetrical doors.

Full circle, symmetrical

360°; two sets of doors.

Full circle, asymmetrical façade connection

360°; two sets of doors.

Full circle, three integrated entrance areas

360°; one set of bi-parting doors + two single doors.


___ mm

1000–2000 mm; segmental radius freely selectable (minimum 1000 mm).

Clear passage width

___ mm

1000–2500 mm; maximum 1300 mm for 1-panel door.

Passage height

___ mm

2100–2500 mm.

Canopy height

___ mm

Minimum 240 mm.

Canopy height extension

___ mm

240–1000 mm.


Operator cover

Supplied as standard for segmental configurations.

Rain-proof ceiling with drainage spouts

Not available for segmental configurations.


Consult DORMA for other options and insert requirements.

Sliding panels

One panel, concave

One panel, convex

Two panel, concave

Two panel, convex

Fixed side screens

Consult DORMA for details and insert requirements.

Profiles and glazing

Double glazing profile system with 18 mm insulating glass units

Fine-frame profile system with 10 mm laminated safety glass

Fine-frame profile system with 10 mm toughened safety glass


Special glazing; consult DORMA for details and recommendations.


Air curtain

180° and 360° design; canopy extension required.

Ceiling aperture for downlights

Downlights by others.

Curved fanlight

Electro-mechanical locking device

Electro-mechanical locking device with mechanical lock release

Emergency Off pushbutton

For BST only.

Emergency Opening pushbutton

For FBST only.

Fail-safe via emergency power supply unit

Supplied as standard on FBST.

Floor guide rail, flush-mounted, with floor ring

Compulsory for clear passage widths > 1500 mm.

Floor guide rail, surface-mounted, with floor ring

Floor guide rail, surface-mounted, without floor ring

Floor mat, Arwei

Floor mat, Emco

Halogen spot, 20 W, including ceiling aperture and accessories

Lateral façade connection glass/ panel board

Midrail, adhesive bonded

Monitored rechargeable battery pack

Supplied as standard on FBST.

Program switch

Consult DORMA for options and recommendations.

Radar motion detector, external

Radar motion detector, internal

Straight panel board for top façade connection

Standard product features

Power parameters:

  • Supply voltage/ frequency: 230 V/ 50–60 Hz.
  • External power supply: 27 V DC/ 2 A.
  • Power consumption, maximum/ average: 250 W/ 30 W.

Operator and control unit parameters:

  • Operator – For BST: ES 200; for FBST: ES 200 2D.
  • Microprocessor control unit; self-learning, self-testing.
  • Obstruction self-recognition; automatic reversing cycle on obstruction contact.

Adjustable parameters:

  • Opening speed per panel: 100–600 mm/s.
  • Closing speed per panel: 100–500 mm/s.
  • Low (creep) speed per panel: 30–90 mm/s.
  • Opening and closing force: Adjustable.
  • Maximum force on contact with obstacle: 150 N.

Programme modes:

  • Off.
  • Automatic.
  • Exit only.
  • Permanent open.
  • Partial open, exit only.
  • Night/ Bank function.


Upper dust-proof ceiling supplied as standard.

Product Options

Delete clause items that are not applicable.

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