Ventilator for freight container

[0039]Referring to FIG. 1, the freight container is substantially cuboidal comprising roof 101, floor 102, side walls 103, 104, 105 and doors 106 positioned opposed side wall 105. The side walls with the largest surface area 103, 104 comprise corrugations 110 extending vertically between roof 101 and floor 102. An air flow vent 107 is positioned at each uppermost corner of side walls 103, 104 to provide air flow into the interior of the container 400, referring to FIG. 4. Alternatively or in addition, a plurality of air flow vents 108 may be provided at each lowermost corner of container 100 on each of the largest faces 103, 104.

[0040]Container 100 comprises a ventilator device 109 positioned over the upper and / or lower air flow vents 107, 108. The ventilator device effectively covers the vents 107, 108 such that air flowing into the freight container interior 400 must pass through the ventilator device 109 interfaced with each air flow vent 107, 108.

[0041]Referring to FIGS. 2 to 4,