Ornamental metal refers to decorative metal elements used in mechanical services, particularly in heating, ventilation, and air conditioning (HVAC) systems, to enhance the aesthetic appearance of a building. These elements can include grilles, registers, diffusers, and other air distribution components that are designed not only to perform their intended function but also to add an aesthetic touch to a building. Ornamental metal can be made of materials such as steel, aluminum, or bronze and can be finished in various colors and textures. The use of ornamental metal in HVAC systems can improve indoor air quality and thermal comfort while also enhancing the overall appearance of a building. Ornamental metal is an important aspect of mechanical services and can help to create a cohesive design throughout a building.