Grilles are structures made of metal or other materials that allow air to flow while keeping out larger objects. They are commonly found in homes, cars, and appliances, serving as covers for vents or openings. Grilles help improve ventilation and can also enhance the aesthetic appeal of a space. In addition to their practical uses, grilles can be decorative. For example, decorative grilles can be used in furniture or architectural designs to add style. They come in various shapes and sizes, making them versatile for different applications, from heating and cooling systems to outdoor grills for cooking.