Bosston BSTNPP-2, Assembly & Operating Manual, Page: 5 / 12

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Within a partial enclosure that includes an overhead cover and no more than two sidewalls.
These sidewalls may be parallel, as in a breezeway, or at right angles to each other.
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Open Both Ends
Within a partial enclosure which includes an overhead cover and more than two walls, the
following shall apply:
a) at least 25% of the total wall area is completely open; and.
b) at least 30% of the remaining wall area is open and unrestricted. .
30% or more in total of the remaining wall
area is open and unrestricted
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Open side at least 25% of total wall area Open side at least 25% of total
wall area
In the case of balconies, at least 20% of the total of the side, back and front wall areas shall be
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