Evo Frame door closer for internal glass doors

City Tower: the skyscraper in Sofia featuring our door closer hinge

Country: Bulgaria – Sofia
roject: City Tower Skyscraper
Product: Oleodynamic door closer hinge
Model: Biloba Evo Frame 835E10 – 835E11

City Tower is an office and shopping center, developed in the business district of central Sofia, in Macedonia Square, by I&B Real Estate, owned by Prodea Investments. The construction of this skyscraper offered the opportunity for leading companies to locate their operations in the heart of the city and thus take advantage of all the services and conveniences of this central location.

The tower covers a total area of approximately 55,000 square meters, 34,500 square meters of which are dedicated to offices, integrated with 1,900 square meters used for a commercial area on the ground floor and 17,600 square meters of underground parking. Almost the entire facade of the building is made with a glass system for curtain walls, which allows a maximum glass area creating a feeling of comfort and transparency. The interiors are also modern and avant-garde; our Biloba Evo Frame 835E10 – 835E11 door closers have been used for the glass doors.


The Evo Frame door hinges in black finish were the best choice for the internal glass doors of the City Tower, the 20-storey skyscraper in Sofia, home to various multinational companies. Also in this case the best asset is the design, with perfectly coordinated profiles and hinges, combined with the versatility of the product. Automatic oleodynamic closers, ease of installation and absolutely no floor breakage – it all completes the set of advantages of this solution. Not surprisingly, since this hinge with internal mechanism and oleodynamic system is protected by international patents.


The door closer hinges for Evo Frame profiles are equipped with adjustable closing and constant braking control, for all door opening angles up to 180°. Also available in the version with closing automation from 90° to 0°. It comes equipped with an anti-unhinging shock absorber and an overpressure device that prevents breakage in case of accidental tugging. It can be installed on doors with a profile and a jamb depth from 30 to 50 mm.

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