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MainTor Porta

The direct link between the financial district and the old town of Frankfurt am Main

Hardware technology:

  • Roto AL Designo


Project data

Frankfurt am Main, Germany
KSP Jürgen Engel Architekten, Frankfurt am Main, Germany; Prof. Christoph Mäckler Architekten, Frankfurt am Main, Germany
Deutsche Immobilien Chancen AG & Co. KGaA
Union Investment Real Estate GmbH
Type of building
Office building, gastronomy, retail
Building height
7 floors (base) + 19 floors (tower)
Systems and profiles
Josef Gartner GmbH
Frame material

Roto solution

Roto AL Designo

Roto AL Designo

Concealed hardware for aesthetic aluminium windows and balcony doors

Requirements: approx. 1,100 sets; dimensions: 968 x 2,701 mm; weight: approx. 140 kg; lockable opening restrictor with a service and cleaning mode.

Solution: Roto AL Designo; Tilt&Turn hardware for windows up to 180 kg; Roto AL | Opening Restrictor 1.3; with a confortable solution for the facility management: lockable stop function, automatic relocking by simply passing over the lock.

Your contact for customised aluminium solutions

Roto Object Business

Certainty in planning and implementing customised aluminium solutions

Technically and aesthetically demanding project implementation requires innovative window and facade element solutions. For particularly large, energy efficient aluminium windows and doors, for which standard components do not fit, we develop economically viable and tailored solutions.

The Roto Object Business experts are your reliable partners for projectspecific window and door technology inquiries. We provide you with customised hardware solutions tailored to your individual requirements with which to implement your ideas.

Roto Object Business