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Minimum opening for makeup air in a dryer installation closet must be what size in square inches?

100 square inches

150 square inches

The minimum opening for makeup air in a dryer installation closet is specified to ensure that the dryer operates efficiently and safely. The correct size of 150 square inches provides adequate air exchange, which is crucial for the combustion process in gas dryers or to replace air that is exhausted in electric dryers. Proper makeup air prevents negative pressure that could lead to inefficient operation or safety hazards, such as improper venting or the risk of carbon monoxide buildup in gas models.

This size is derived from industry standards and codes that dictate ventilation requirements for residential appliances. The prescribed dimensions take into account factors such as the dryer's capacity, the volume of air it requires for combustion or operation, and the need to maintain a balanced air environment in the appliance's installation area. By adhering to this guideline, compliance with relevant building codes and ensuring safe operation are achieved.

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175 square inches

200 square inches

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