Airports, railway stations, etc.

Whether in the airport terminal, the subway station, or the traffic hub: air duct systems in public transport must meet the highest standards. We offer you a comprehensive range of products and solutions that enable you to create airtight, hygienic, and durable air ducts – flexible in application, compliant with standards, and reliable in operation. Rely on our experience and quality for your public space projects.

Innovative solutions for maximum airtightness

In high-traffic areas such as airports, subway stations, or transport hubs, reliable air distribution is essential – for people’s well-being, operational safety, and compliance with legal requirements. Our high-quality products and system solutions enable the manufacture and installation of air ducts that meet the highest standards of airtightness, hygiene, and durability.

Challenges in public transport

Air duct systems in public transport must withstand extreme conditions:

  • High passenger traffic
  • Fluctuating temperatures and humidity
  • Vibrations caused by vehicles
  • Limited installation space and complex architecture

Our product solutions are specifically designed for these requirements. They ensure permanently airtight, hygienic, and flexible air distribution, suitable for both new constructions and renovations.

Wherever people are on the move

Our components and systems are used in various areas of public transport:

  • Airports: Air ducts for terminals, baggage areas, lounges, and technical rooms
  • Subway stations: Robust systems for underground facilities with special fire protection and safety requirements
  • Railway stations and transport hubs: Flexible solutions for large halls, waiting areas, and service zones
  • Bus terminals and stops: Compact systems for limited space conditions

FAQ

Yes. Our components are designed for high air volumes, long duct systems, and robust installations – ideal for public buildings with high visitor traffic.

Yes. Our components are corrosion-resistant, durable, and suitable for use in outdoor areas, maintenance halls, or tunnel installations.

With our sealants, sealing tapes, and connecting elements, air duct systems can be built to achieve airtightness class D according to DIN EN 12237 and DIN EN 1507 / ATC 2 according to DIN EN 16798 – ensuring maximum air purity and energy efficiency.

No, we don’t manufacture air ducts ourselves. Instead, we empower ventilation and plant engineering professionals with premium components and solutions for constructing and installing high-performance duct systems. Our products ensure airtightness, durability, and compliance – so your projects run smoothly and efficiently.

Standard components are ready for immediate delivery from stock. For major projects, we provide tailored delivery concepts and seamless logistics solutions – ensuring your timelines are met without compromise.

Our recommendations

Premium-Flange

Our premium profile redefines air duct manufacturing. Featuring reinforced clinching and a double bead for unmatched stability and precision, it guarantees a perfect fit. The factory-applied sealant meets VDI 6022 standards, delivering long-lasting airtight connections – the ultimate choice for projects with the highest hygiene and energy efficiency requirements.

Premium-Flange

Sealants

Gebhardt-MAXX, Gebhardt-PLAST, and Gebhardt-MASTIC deliver superior airtight sealing for air duct systems. Free from silicones and solvents, they meet VDI 6022 hygiene standards and ensure long-lasting, reliable connections. Efficient to apply and built for sustainability – the perfect choice for modern HVAC installations.

Sealants

Sealing tapes

Our EPDM and polyethylene sealing tapes deliver perfect airtightness for air duct components. Designed for easy handling and superior material quality, they ensure reliable sealing performance. Certified to VDI 6022 standards, they support hygienic and energy-efficient airflow – the smart choice for modern HVAC systems.

Sealing tapes

flex.x

The flex.x DIY kit lets you create flexible connection pieces with ease – no quality compromises. Whether square or round, it’s perfect for diverse air-handling applications, delivering effortless assembly, precise fit, and the trusted Gebhardt quality you rely on

flex.x

Our shop – available 24/7

In our online shop, you can order profiles, corners, and accessories quickly and easily. Practical features such as order lists, custom article numbers, and many other tools simplify your purchasing process and ensure maximum efficiency.

Our shop

Do you have questions?

Give us a call. Or write us an email. We're here to help.

Efficiency down to the finest detail

Efficiency in handling

With our solutions, we reduce the assembly time on site. We offer a punching press for connecting flanges and corners, along with many other machines and kits.

Efficiency in energy

The premium slip-on flanges and turning vane fasteners are just two examples of components that ensure a sustainably airtight duct, helping to save energy.