We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A crossed-out box on a box, forbidding anything placed on top.
Two boxes with a cross over the upper one forbid stacking anything on the package. A numeral in place of the cross gives the maximum number of boxes that may be piled instead.
In the ISO 780 handling series, a crossed-out box above another indicates that stacking is not permitted.
Contexts: Packaging
A related mark replaces the cross with a numeral to give a stacking limit rather than a prohibition.
Contexts: Packaging
Two square outlines one above the other, the upper one crossed through by a large diagonal cross.
Both are used in packaging contexts.