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Insulated containers with interlocking
lids, i.e. tongue and groove, offer several advantages over
free floating lids or flexible foam plugs.
- Increased thermal efficiency over lids
on containers that freely rest on the tub walls.
- Increased structural strength of the
container to withstand transit riggers and to provide
multiple reuses.
- A more compact container profile reducing
the likelihood of dimensional weight charges and reduced
storage space requirements.
- Common material for both lid and
tub to ease recycling issues and international labeling
requirements and to precondition at the same rates.
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