Zero ZCCC-222.GX, Инструкция по эксплуатации

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Open side at least
25% of total wall area
30 percent or more in total
of the remaining wall area
is open and unrestricted
Figure 5
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Open side at least
25% of total wall area
30 percent or more in total
of the remaining wall area
is open and unrestricted
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CAUTION: In the case of balconies 20% or more of the total wall
area shall be and remain open and unrestricted