In the very centre of Pančevo in Serbia, a modern, energy-efficient and architecturally bold residential complex SK12 has been completed. A recognizable feature of this building are movable golden facade panels. Their structure and arrangement of the perforations resemble the structure of leaves while providing flexible protection from the sun and a suitable microclimate in the living space. The building has 5 business spaces, 24 apartments, 6 duplexes with green roof gardens on a secluded floor and an underground parking garage.

The building's construction system - a reinforced concrete frame, with supporting pillars and elevator cores, gives exceptional stability and longevity to the building and incredible flexibility in creating the perfect living space.The floor height of 3m enables better ventilation and lighting of the space, which gives it additional heat and reduces the need for primary energy through a high intake of daylight. The two-sided orientation gives users the choice of enjoying the peace and greenery of the inner atrium or the lively spirit of the city street.
The building's "deep facade" defines a space of its own. It articulates its own climate by pulling the heat away from the glazing and passing it to the upward air streams.
By creating different temperatures in two adjacent environments of the facade - external and internal, there is a difference in air pressure which tends to balance and causes airflow through larger and smaller panel openings which with their different sizes, further intensify the flow, i.e. ventilation of the facade and fresh air.

The hollowness of the panels depends on the building orientation and range from 19 to 28%. The convex position of the panels to the outside reflects the sun's rays to a greater extent, while the concave ones retain them, so the convex position of the panels is used to a greater extent on the south side and the concave position on the north side.
Folding the panel so that the concave is behind the convex, extended towards the sun, allows the reflection of the sun's rays between the surfaces of the panel, which leads to heating of the air. Thus, by moving the concave panel during the day, from morning to evening, the heating intensifies. By completely folding the panel, an air pocket is formed which stores the heated air and thus acts as a radiator. To avoid intensified heating in summer and to accelerate the reflection of the sun's rays, to reduce the temperature, it is necessary to place the panels in the opposite position to the winter ones.
Inside, the convex and concave sliding panels provide different light moods. The kinetic facade alters the illumination of interior space. When closed, panels form an envelope and the view of the inside is fragmented beneath recognition.
In addition to the latest technology, this ambitious project is characterized by extremely large glass surfaces made in Tehnomarket LINEAL Therm 77 aluminium profile system for windows and doors in the most demanding buildings, which require high energy efficiency and effective protection from city noise.