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Mullion & Transom

Block 21 hotel and residences in Austin, Texas.

Photo © A. Zahner Company

Detail of the 200 Eleventh Ave stainless steel facade.

Photo © A. Zahner Company

Fresno City Hall in Historic Fresno, California.

40 Bond Street in New York City.

Photo © A. Zahner Company

Custom interior glass sliding doors for the walker tower lobby.

Photo © A. Zahner Company

Custom mullion and transom systems developed by Zahner provide designers with the tools for challenging the status quo and building something new. Zahner provides rich customizations, developing unique cladding designs for both vertical and horizontal members.

Products, Systems, and Custom SolutionsProducts, Systems, and Custom Solutions

Zahner offers a range of systems that can be used as part of a complete building envelope.

About Mullion & Transom

When a designer begins working through the glazing and fenestration options, they will often find the choices lacking. These are typically limited to standard aluminum frames. Zahner provides custom mullion and transom design development and fabrication, expanding the designer’s palette by as far as the imagination will take them.

Unique mullion and transom systems can benefit an otherwise standard design by adding something intriguing to the vertical and horizontal supports. From prestige metal alloys to ornate tracery and historic metalwork, customizing these component covers can transform a design from a standard architectural feature into something fantastic and one-of-a-kind.

These mullion systems can be retrofitted onto existing aluminum mullion systems, or customized onto uniquely shaped extruded aluminum forms developed by Zahner.

Patinated copper on the 40 Bond Street’s north elevation.
Photo © A. Zahner Company
Custom copper mullion system in New York City.
Photo © A. Zahner Company
Custom mullion and transom frame developed for ShopFloor technologies.
Photo © A. Zahner Company

Zahner works with architects and designers to realize their vision. Developing a custom mullion system starts with your concept. Zahner will provide design options as well as full service design assist, engineering, manufacturing, and installation services. To learn how Zahner can work with you on your project, contact the Zahner sales team and get started.

Featured Projects

Block 21 Hotel

Block 21 Hotel

Walker Tower

Walker Tower

40 Bond Street

40 Bond Street

200 Eleventh

200 Eleventh
block-21-hotel-w-copyright-zahner-8649-scaled

Take your next project beyond ordinary.

Work with the Zahner Custom Solutions team to create a one-of-a-kind solution for your project.