SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

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IMC 1105.6.2 requires machinery-room makeup-air and exhaust ducts that serve only that room to be covered with corrosion-resistant screen of not less than:

1/16-inch mesh 1/4-inch mesh 1-inch mesh No screen is permitted

Correct Answer:

1/4-inch mesh

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