A panel system including a sheet-like movable panel; a lower profile carrying the panel weight and acting as a panel guide track; an upper profile supporting the panel from above and acting as a panel guide track; and an opening guide track placed in parallel with the lower profile, carrying the panel weight and acting as a panel guide track. The panel can move from the lower profile onto the opening guide track and simultaneously pivot to an open position, in which the panel weight is carried by both the lower profile and the opening guide track. In an embodiment, an opening angle of the panel with respect to the lower profile in the open position is smaller than 90° or 85°, or not greater than 45°, or is preferably from 10° to 15°. In an example, the panel system further includes a sheet-like immovable panel with an open position.