Technical Booklet K Ventilation·Page 13

Ventilation Opening

Any part of a window or hinged panel that opens directly to external air, excluding mechanical ventilation openings.

Ventilation opening – any part of a window, or any hinged panel, adjustable louvre or other means of ventilation which opens directly to the external air or to an enclosed place, but does not include any opening associated with a means of mechanical ventilation.

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