(57) The refrigerator includes a casing determined by a wall with an internal covering
(4), an external covering (3) and an intervening heat-insulating layer (2), through
which wall is fed, via a penetration duct, a breather tube from the refrigerator storage
space to the outside. The penetration duct has a first section (5) followed by a second
section (7) separated by means of an intervening wall (6 or 6') which can be perforated
or even removed. The first section (5) has a surrounding lip (11) which fits externally
over the external insulation (3), while the second section (7), shaped internally
as a truncated cone (8), is pressure-fitted onto a formation (9) of the internal covering
(4), said formation (9) being provided with a seal (10) which can also be perforated
or removed. The penetration duct is prepared to prevent the injection of the foam
that is to constitute the heat-insulating layer (2), from reaching the outside or
from penetrating into the refrigeration compartment of the corresponding refrigerator.
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