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All windows and doors used for ventilation purposes shall be provided with wire screening of not less than which mesh number?

10

12

16

For proper ventilation, it is important for windows and doors to have wire screening that can effectively prevent insects and debris from entering the building. A wire screening with a mesh number of at least 16 will provide adequate protection while still allowing air flow. Options A (10), B (12), and D (20) all have mesh numbers that are too large or too small to effectively prevent insects and debris from entering the building.

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