Metal Mullions

Metal Mullions

Metal mullions are vertical or horizontal structural elements typically made of aluminum or steel that are used to support the weight of a building's exterior wall and provide a framework for the attachment of glass or other cladding materials. They are commonly found in modern architecture and are used to create a sleek and minimalist look. The use of metal mullions allows for large expanses of glass to be incorporated into the building's facade, providing natural light and a connection to the outdoors. Mullions also play an important role in the energy efficiency of a building, as they help to reduce heat loss and gain by providing a thermal break between the interior and exterior of the building. Metal mullions can be customized to fit the specific needs of a building's design, with options for different shapes, sizes, and finishes. They can be installed using various methods, including screwing, welding, or bolting, and are typically designed to withstand the forces of wind and seismic activity. Overall, metal mullions are an essential component of modern architecture, providing both structural support and aesthetic appeal. Their versatility and durability make them a popular choice for architects and builders alike.

structural elements, aluminum, steel, cladding materials, energy efficiency

— James Brown

CITATION : "James Brown. 'Metal Mullions.' Design+Encyclopedia. https://design-encyclopedia.com/define/metal-mullions?E=333017 (Accessed on October 13, 2026)"