Disclosed is a lateral cabinet (20) comprising a box (30) arranged along a passage (24), at least one swing leaf (32) for blocking the passage (24), formed from a primary flap (50) and a secondary flap (52) mounted so as to be able to move relative to each other between a folded configuration in which the secondary flap (52) is nested within the primary flap (50) and an unfolded configuration in which the secondary flap (52) mainly extends out of the primary flap (50), and a hinge mechanism (34) hinging the swing leaf (32) to the box (30) comprising a primary pivot link (56) for the primary flap (50) to pivot relative to the box (30) about a primary axis (A-A') substantially parallel to the positioning surface (45) of the box (30), a secondary pivot link (58) for the secondary flap (52) to pivot relative to the box (30) about a secondary axis (B-B') substantially parallel to the primary axis (A-A') and spaced apart from the primary axis (A-A'), and a rigid part (60) hinged to the primary and secondary flaps (50, 52).
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