A collapsible crate comprising: a base; a side wall extending in a longitudinal direction and hingedly attached to the base such that the side wall is movable between an erected configuration and a collapsed configuration, wherein the side wall comprises a top edge and an inner face, wherein the inner face comprises a guide channel (129A, 129B) extending from the top edge towards the base and comprising a first channel edge and a second channel edge opposite from the first channel edge, wherein a distance between the first channel edge and the second channel edge is a width of the guide channel (129A, 129B), wherein the guide channel (129A, 129B) comprises a foot portion opposite from the top edge, and wherein the width of the foot portion of the guide channel (129A, 129B) is greater than the width of the guide channel (129A, 129B) between the top edge and the foot portion; an end wall extending in a transverse direction and hingedly attached to the base such that the end wall is movable between an erected configuration and a collapsed configuration, wherein the end wall is adjacent to the side wall; and a swing bar assembly pivotably supported on the end wall, wherein the swing bar assembly comprises a swing bar that is at least partially received within the guide channel (129A, 129B), wherein the swing bar comprises a first end and a second end, and wherein the swing bar assembly further comprises: a first connecting arm; and a second connecting arm, wherein the first connecting arm and the second connecting arm are each pivotably attached to the end wall, and characterized in that the first connecting arm and the second connecting arm each extend from the swing bar such that a first end extension is defined on the swing bar between the first connecting arm and the first end and a second end extension is defined between the second connecting arm and the second end, and wherein at least one of the first end extension or the second end extension is received within the guide channel (129A, 129B). a base; a side wall extending in a longitudinal direction and hingedly attached to the base such that the side wall is movable between an erected configuration and a collapsed configuration, wherein the side wall comprises a top edge and an inner face, wherein the inner face comprises a guide channel (129A, 129B) extending from the top edge towards the base and comprising a first channel edge and a second channel edge opposite from the first channel edge, wherein a distance between the first channel edge and the second channel edge is a width of the guide channel (129A, 129B), wherein the guide channel (129A, 129B) comprises a foot portion opposite from the top edge, and wherein the width of the foot portion of the guide channel (129A, 129B) is greater than the width of the guide channel (129A, 129B) between the top edge and the foot portion; an end wall extending in a transverse direction and hingedly attached to the base such that the end wall is movable between an erected configuration and a collapsed configuration, wherein the end wall is adjacent to the side wall; and a swing bar assembly pivotably supported on the end wall, wherein the swing bar assembly comprises a swing bar that is at least partially received within the guide channel (129A, 129B), wherein the swing bar comprises a first end and a second end, and wherein the swing bar assembly further comprises: a first connecting arm; and a second connecting arm, wherein the first connecting arm and the second connecting arm are each pivotably attached to the end wall, and characterized in that the first connecting arm and the second connecting arm each extend from the swing bar such that a first end extension is defined on the swing bar between the first connecting arm and the first end and a second end extension is defined between the second connecting arm and the second end, and a first connecting arm; and a second connecting arm, wherein the first connecting arm and the second connecting arm are each pivotably attached to the end wall, and characterized in that the first connecting arm and the second connecting arm each extend from the swing bar such that a first end extension is defined on the swing bar between the first connecting arm and the first end and a second end extension is defined between the second connecting arm and the second end, and wherein at least one of the first end extension or the second end extension is received within the guide channel (129A, 129B).