The construction measure includes the basic overhaul of the main building of the Humboldt University in Berlin. The measure includes the new construction of composite windows based on the historical model in the central wing east and north head east. The service includes dismantling work, the preparation of the reveal for building connections, interior window sills and room-side services. Carpentry work according to DIN 18355 is available.

- 16 pieces dismantling of existing wood windows (composite windows) including the interior window sills;

- 22 wooden composite windows as a historical replica of the existing building;

- Individual dimensions: b = 1.90 mh = from 2.00 m to 4.50 m;

Partly arched window:

- 70 pc window handles;

- 50 rosettes of thorns;

- 20 pieces of skylight, tilt and turn fittings;

- 45 pieces opening limiters;

- 150 m straight and curved wall connection strips;

- 20 pcs indoor window sills;

- 180 m leveling plaster window reveal, plastering work DIN 18350.