A gable vent is a type of vent installed in the gable end of an attic or roof, typically located near the peak of the roof. It allows for the circulation of air in the attic, helping to reduce moisture buildup and regulate temperature. By promoting airflow, gable vents prevent issues like mold, mildew, and overheating, especially during hot months. They work in conjunction with other ventilation components, such as soffit vents, to create a balanced system for effective attic ventilation. Proper function is crucial for maintaining the integrity of the roof and insulation.