Spiral door EFA-STT®

plasticindoorsafety

Overview The EFA-STT® is a high-speed spiral door with door leaf laths made of crystal-clear acrylic glass, providing >70% visible transparency while maintaining structural performance. The transparent design improves visibility at bidirectional passageways, reducing collision risk and supporting efficient material flow.

EFA-STT® at a glance

• Door leaf transparency: >70% (crystal-clear acrylic laths)
• Opening speed: up to 3.0 m/s
• Closing speed: up to 1.0 m/s
• Highest wind load capacity
• Advanced safety devices (compatible with EFA-SCAN®)
• Operating cycles: up to 200,000 cycles per year
• Standard max dimensions: width up to 8,000 mm, height up to 7,800 mm

Wear-free door leaf guide The patented EFAFLEX spiral keeps the door leaf at distance during winding instead of wrapping it on a shaft. This contact-free winding minimises wear on the laths, combines high opening speeds with long service life and ensures quiet operation.

Natural incidence of light The transparent laths provide daylight and clear sightlines between adjacent areas. Improved natural lighting and visual contact ease workflows in lock systems and busy production zones.

Universal use With transparent appearance, high opening speed and large available sizes, the EFA-STT® suits a wide range of industrial applications. Configurable lath combinations allow adaptation to specific site requirements, including a low-headroom version.

High-end safety technology EFA-STT® integrates modern safety systems to protect personnel, goods and the door itself. Associated solutions such as EFA-SCAN® combine pulse generation and safety monitoring in one unit.

Customization and materials Transparent laths are supplied as standard in PVC-free acrylic glass. Lath combinations (e.g. mixed grey and transparent sections) can be configured on request to match functional or visual requirements.

Technical specifications

• Door leaf transparency: >70% (crystal-clear acrylic laths)
• Maximum opening speed: up to 3.0 m/s
• Maximum closing speed: up to 1.0 m/s
• Wind load capacity: highest (designed for high wind loads)
• Safety: advanced safety devices; compatible with EFA-SCAN® laser scanner
• Operating cycles: up to 200,000 cycles per year
• Standard maximum dimensions: width up to 8,000 mm, height up to 7,800 mm
• Door leaf guidance: spiral winding at a distance to avoid wear
• Materials: PVC-free acrylic glass for transparent sections; customisable lath combinations