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Karte Deutschland Stadt Iserlohn

In Iserlohn, sefa produces innovative and efficient air curtain systems of the latest generation.


This includes the DOUBLE Q system - an air curtain for differently air-conditioned building parts, rooms and chambers at open doors, gates and passages.

As well as the BISTRO & POLAR BOJE - the practical table for the catering industry with recirculation technology for cozy warmth in winter and refreshing coolness in summer.

For years, sefa development engineer and climate protection specialist Robert-Georg Falk has been recognized as an expert in the fields of

atmospheric separation and air shielding technology.

The DOUBLE Q system is not only able to thermally shield open indoor and outdoor air areas from each other, but it also minimizes the entering or escaping particles, substances and humidity contained in the outdoor or indoor air as far as possible.

With our production site in Germany, we ensure product quality at the highest level.



Every day, we are committed to ensure that our company does their best for the environment and acts sustainable. To achieve this, sefa takes responsibility for employees, customers and suppliers and uses technologies that can protect people and nature.

Our processes and activities contribute to sustainable corporate development:

  • We keep emissions, waste and noise as low as possible.

  • We promote the environmental awareness among our employees.

  • We comply with the relevant laws and regulations regarding environmental protection.

  • Regular audits of our environmental aspects identify issues with the greatest potential for preventing environmental hazards or protecting the environment.

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