Mounting for a window unit

The support has a window assembly (1) provided with a window frame section (2) and a covering section (7). The window frame section is provided with a first window frame portion part (2a) and a second window frame portion part (2b). A window section (10) is connected with the second window frame portion part and is provided with a circulating bar (3). The second window frame portion part is arranged on the circulating bar. The covering section is provided with two wedge-shaped piping parts (7.1, 7.2) and an intermediate piece (7.3). The window frame section is equipped with a hollow chamber.