Joinery – is part of the window element, which is rigidly connected to the wall. In another way it can still be called 'a window box. " In some cases, the frame itself can hold the glass, that is, no additional elements in No window (wings, bars). In this case we speak of 'blank window', ie the window that is not open. Putting it makes sense when you're not going to use a window for ventilation. For example, if a small window out into a dull patio. Instead of glass in such a case, with a decorative purpose, you can insert stained glass.

Sash – the movable element of the window. Depending on the type of connection to the sash frame can open the doors, recline, or opened by rotating around a vertical or horizontal axis, and the window can be opened in different directions. Windows can be as solid, with two or three solid doors – in Most modern windows, and have a window and transoms. Ventilator – a small flap, connected to the frame. Designed ventilator for ventilation of rooms, especially during the cold period, when all the big open fold inappropriate. Transom – a flap that pivots the lower horizontal axis. As a rule, it is located at the top of the window. Windows with transoms are more characteristic of old structures, though if you want you complementary profiles included in each other, the partition between the doors are not needed.

These doors are called "wings of shtulpom. Shtulp – this bill profile, mounted on one of the wings to create a porch in Bivalve windows and doors. Deaf can not only be the entire window (when the windows are inserted directly into the frame), but also a separate wing. In this case, it does not open. This design is typical for two-or tricuspid windows.