The doors do not wind onto a shaft but are guided into the patented KK-WF spiral, which allows:
✅ Space savings and optimal distance between the slats
✅ Fast and quiet operation without friction
✅ Longer lifespan of door slats

Different Spiral Designs

To accommodate various spatial constraints, three spiral system designs are available:
1. Round spiral – the standard solution for the fastest opening/closing times
2. Oval spiral – space-saving solution for limited heights
3. Low headroom design – ideal for parking garages and underground facilities

High-Quality Slats

KK-WF STT doors use crystal-clear acrylic slats that provide more than 70% transparency, offering:

• Brighter spaces and energy savings on lighting
• Clear visibility through the door, enhancing transport safety
• High resistance to impacts and wear

Exceptional Speed and Long Lifespan

• Opening speed of up to 3.0 m/s enables fast material flow
• Doors withstand up to 150,000 operating cycles per year, ensuring low maintenance costs

Superior Safety

• Active collision protection system (WF-ACS) – doors automatically reset after impact
• Integrated light barrier – prevents accidents in the closing area
• Manual emergency opening option – springs allow easy manual lifting of the door

Advanced Energy Efficiency

• Excellent thermal insulation (slats WF-40/60/80) reduces energy loss
• Maintains internal temperature and prevents the intrusion of cold or warm air
• Fast opening and closing minimize heat loss

Fully Automated Control

• Electronic control system allows integration with traffic lights, barriers, and monitoring systems
• Remote control capability for greater flexibility

Spiral high-speed doors KK-WF STT are the perfect choice for logistics centers, industrial plants, parking garages, and production facilities where speed and reliability are of utmost importance.