Gable vents are openings located at the peak of a roof, typically found in the triangular section of a building's exterior. They allow for air circulation in the attic space, helping to regulate temperature and moisture levels. This ventilation can prevent issues like mold growth and ice dam formation during winter. These vents come in various styles and sizes, often made from materials like wood, vinyl, or metal. Proper installation of gable vents can enhance the overall energy efficiency of a home by reducing the need for air conditioning and heating, ultimately leading to lower energy bills.