According to fig. 1, the streams a and b are mounted on a structure, provided for this purpose, made of posts 7 and of the cables can be stretched 6 and held at the level of a central reinforcement 23a and b 2 to this effect of a conventional manner for a net hail. The net is held taut flat between the central reinforcement 23a and the intermediate reinforcing 18a due to the action of an elastic short 4 and its means of attachment plates 3 and the hooks 12, which transmits this voltage in the symmetry of the assembly is equivalent to the net b adjacent and parallel to its structure. The elastic 4 is located at the top of the two skirts 1a and 1b which hang from the intermediate supports parallel to the central reinforcement 23a and b. these two skirt portions 1a and 1b are joined at their reinforcing fabric edge 23 to this end, by means of straps or insert made of plastic material 2 and form a v-shaped channel open upwards. This mounting covers and protects perfectly hail, the orchard or the cultures are located below and allows the flow of hail between the edges or borders 23 which leave a free space between the plates 2.
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