(under the class definition) Boxes made from wall structure comprising mutually conforming inner and outer wall elements entirely spaced from one another to inhibit transfer of a temperature condition therepast into the contents space.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4, or 28+, for a tank or a box, respectively, comprising spaced walls defining a temperature barrier to the contents; and see the search notes in the latter locus.
130, for a box accommodating a refrigerant and a container for refrigeratable contents, the container being supported spaced from the box walls and bottom to avoid the influence of temperature conditions outside the box.
