摘要:
A fastener (1) for windows and doors, comprising at least: threads (2), a head part (3), and screwable elements (4) of the fastener, by means of which the fastener (1) can be screwed. In an example, the fastener (1) comprises a shape, to which a threaded adjustment screw (13) can be connected, and the threaded adjustment screw (13). In the method, the fastener (1) is applied in such a way that at least one fastener (1) for windows and doors is fastened to the insulation layer (8) of a wall structure, and a built-in frame (5) is fixed to at least one fastener (1) for windows and doors. A system for installing a window or a door in a wall structure comprises a built-in frame (5) for the window or door, a fastener (1) for windows and doors, and a fastening element (12) which is intended for fixing said built-in frame (5) to at least one fastener (1) for windows and doors.