To fit a loading apparatus such as an evaporator in a chamber for loads, to easily correspond to changes in its dimension and fitting position and to keep its heat insulating performance in a box for the loads for transportation provided with heat insulating structure.

A filler material 42 is arranged between a pair of clamp members 40 each with a holding arm fitting to a flange part 30 with a hat- shaped crosssection of a tension member 16 and the holding arm is fitted to the flange part and the filler material is pinched and clamped and a flange part of a fitting bracket 35 with an inverted hat-shaped cross section is bound to the tension member through the filler material and the fitting bracket is fitted at right angles to the tension members over at least two tension members and a long hole for inserting freely a fitting bolt 37 for an apparatus is provided on the top part of the inverted hat shape of the fitting bracket to make a fitting position changable in the direction along the tension member and in the direction intersecting it at right angles.