| 摘要 |
A reversible ventilation opening to fit roofs on which the slope is 35% or more and which are formed using small flat units such as slates, tiles, shingles. It is characterised in that the air inlet for ventilation is made, according to the method of fixing chosen, either by an assembly A comprising principally a deflector 6, a cap 4, chutes 9, 9' or by an inverse assembly B comprising principally inlets 13, 13', chutes 11, 11', and a receptacle 12. The invention is particularly relevant to the building industry. <IMAGE>
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