Is hardware cloth used for vent openings and outside air intakes?

• A. True
• B. False
• C. Only for indoors
• D. No, it's used for insulation

Answer: (A)

Hardware cloth is used as a protective screen over vent openings and outside air intakes. The rigid wire mesh blocks insects, rodents, and small animals from entering while still allowing air to flow freely, which is exactly what you need at ventilation intakes and exhausts. It’s usually galvanized to resist rust and comes in different mesh sizes so you can choose openings small enough to keep pests out but large enough for adequate airflow. It isn’t for insulation, and it isn’t limited to indoors; you’ll commonly see it on outdoor air intakes and vent openings to maintain ventilation without letting pests in.