The invention relates to a Freilaufbox for pigs, especially sows and piglets. This freewheel boxes have a pivoting mechanism (1) and a rectangular base area, which are delimited by the usual limitations with respect to and / or doors.This pivot mechanism (1) has at least one mounting frame (2) having a base axis (2.2), on which at least one arm (2.1) is arranged, and a door mechanism (3), which at least one door element (3.1) having a rotational axis (3.2) has. This axis of rotation (3.2) is arranged parallel to the base axis of rotation (2.2). The door mechanism (3) is pivotally arranged on the mounting frame (2).
