Unit-and-Mullion System

Definition

The unit-and-mullion system is a curtain wall system consisting of prefabricated panel units that are secured using site-applied mullions.

Purpose

This system is designed to simplify the installation process of curtain walls by using prefabricated panels that can be quickly and easily assembled on site. The unit-and-mullion system enhances construction efficiency and ensures a high level of quality control for the curtain wall components.

Examples of Use

• High-Rise Buildings: Installing unit-and-mullion systems on skyscrapers to provide a sleek, modern façade with efficient installation.
• Commercial Complexes: Utilizing this system in commercial buildings to achieve consistent and durable exterior walls.
• Office Towers: Applying unit-and-mullion systems to create aesthetically pleasing and weather-resistant building exteriors.

Related Terms

• Curtain Wall: A non-structural exterior wall covering the building frame, typically made of glass, metal, or stone.
• Mullion: A vertical or horizontal element that forms a division between units of a window, door, or screen.
• Prefabrication: The process of assembling components of a structure in a factory or other manufacturing site before transportation to the construction site.

Notes

The unit-and-mullion system allows for better control over quality and appearance as the panels are fabricated in a controlled environment. It also reduces on-site labor and installation time, leading to cost savings and efficiency improvements.