The insulated unit (1) of the present invention comprises an inner liner (9), an outer liner (8), an insulation space (10) between the inner liner (9) and the outer liner (8), an insulating material (2) filling the inner space (10). The inner liner (9) and the outer liner (8) of the insulated unit (1) are formed by a composite sheet (11) including one or more plastic sheets (3) and one or more film materials (7) that is formed by metal and thin plastic layers.
