Grates are flat, often metal structures with openings that allow liquids or small particles to pass through while blocking larger objects. They are commonly used in various applications, such as drainage systems, where they prevent debris from clogging pipes, and in cooking, where they support food items over a heat source. In addition to their practical uses, grates can also serve decorative purposes. For example, grate designs can enhance the appearance of outdoor spaces, such as gardens or patios. They are also found in heating systems, where they cover vents and allow warm air to circulate while maintaining safety.