| CPC F25D 23/06 (2013.01) [B31B 50/26 (2017.08); B65D 25/28 (2013.01); B65D 81/3888 (2013.01); F25D 23/067 (2013.01); F25D 23/069 (2013.01); B31B 2120/402 (2017.08); F25D 3/14 (2013.01); F25D 5/02 (2013.01); F25D 2201/12 (2013.01); F25D 2323/061 (2013.01)] | 12 Claims |

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1. A modular box assembly comprising:
a box comprising:
a top end;
a bottom end disposed opposite from the top end;
a plurality of side panels defining a box cavity within the box and extending between the top end and the bottom end; and
a shoulder comprising a first sub-shoulder extending inward from a first of the plurality of side panels into a cavity, and a second sub-shoulder extending inward from a second of the plurality of side panels into the cavity, the first sub-shoulder, the second sub-shoulder, and a first side panel of the plurality of side panels define a shoulder channel; and
an inner box suspended within the box cavity and dividing the box cavity into a first sub-compartment below a second sub-compartment, the inner box comprising:
a center panel comprising vent holes;
an insulated cavity panel placed beneath the top end to resist heat transfer through the top end; and
a channel tab sized and configured to frictionally engage the shoulder; the channel tab frictionally engages the first sub-shoulder and the second sub-shoulder; and the channel tab engages the shoulder to suspend the inner box between the top end and the bottom end.
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