La Boite Concept CUBE Instructions page 45

AERATION / IMPORTANT - The unit may heat when
used. Never operate the central part without its side bases.
Do not place the equipment in a completely closed room or
in a compartment insufficiently ventilated.
Make sure that no small object can pass through the CUBE.
If this should happen, immediately switch off the device,
disconnect it from the wall outlet and contact your dealer
for help and advice.
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