What restriction is placed on inserts in the outer profile section of a rear corner post?

Inserts in the outer profile section of a rear corner post are restricted so that they cannot share the same horizontal plane as another insert. This requirement ensures structural integrity and proper load distribution within the container. When inserts occupy the same horizontal plane, it might compromise the strength and functionality of the corner post, leading to potential issues with the overall stability and safety of the container.

Maintaining separation in the horizontal plane prevents overlapping stress and ensures that each insert can perform its intended role without interference from another. This is crucial in maintaining the performance specifications of the container, especially under the dynamic loads it may experience during shipping and handling.

Other options introduce conditions that do not align with the structural considerations for inserts. For example, allowing inserts of any size could lead to installation challenges or integrity issues. Specifying that inserts must be made of a different material is not typically required, as compatible materials can be used interchangeably without compromising the structure. Lastly, the stipulation of finishing inserts within 24 hours does not pertain to the critical structural requirements involving their placement and safety.