The appropriate name Black Forest refers to the extensive green park in the Putuo district of Shanghai that encircles the complex of the same name. Black Forest comprises three modern residential towers, each measuring one hundred metres tall, and is the third and final phase of a large-scale luxurious residential development project. The way in which branches grow on trees is reflected in the architecture of the towers: the storeys look like they have been randomly stacked one above the other, like the branches of a tree. Each stacked volume features 'leaves' in the form of green patios. Reynaers supplied the profiles for the façades of tower 11. This building contains luxury apartments, each with between 200 and 500 square metres of floor space. The Hi-Finity system with triple glazing, half of which are motorised, was used for the sliding windows leading to the patios. The refined lines of Hi-Finity contribute to the unobstructed enjoyment of the phenomenal view from the penthouse. Furthermore, the system is ideally suited to extreme weather conditions.