One Pierce Place, Suite 295W
Itasca, IL 60143

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About Us

A privately held, worldwide leader in the manufacture of laser-welded air spacer and decorative products and components for the insulated glass, window and door industry.


Itasca, IL (Chicago area)

Major Products:


Seven manufacturing and distribution facilities worldwide.

Support Businesses:

  • Injection Molding Division
  • Tooling & Design Division
  • Fabrication Machine Division


Started in 1915 by two partners, Allmetal has continued to evolve into one of the leading innovators of the insulated glass, window and door market. Beginning with a core product of weatherstrip—Allmetal also accepted a variety of custom roll-forming jobs. Soon, Allmetal was producing other customer-driven products such as stainless steel counter edging, hangers and mop handles.

Seven Facilities Spanning the Country and Beyond

From one manufacturing location in Chicago (as Allmetal Weatherstrip Company) to seven facilities worldwide including a highly-capable Tooling and Design Division and Injection Molding facility, Allmetal, Inc. is today recognized worldwide for its laser-welded air spacer and decorative products and components for the insulated glass and door industry.

“As a quality supplier of laser-welded air spacers, decorative muntins and molded components, Allmetal understands that this relationship is something that cannot be taken lightly. Over the past...”

The Allmetal group circa 1950

Leading the Way in Air Spacers

In the mid 1960s, Allmetal found a growing market in the production of air spacers for the Insulated Glass industry—and a niche was formed. Eventually, Allmetal exited the weatherstrip market completely and focused mainly on air spacers and related components.

Injection Molding Facility opened to meet growing demand

In 1979, Allmetal opened its full-service injection molding facility to meet customer demand.

“Another integral part of Allmetal is our injection molding division. Producing more than 1.4 million corner keys, straight connectors, screen corners, muntin keepers, contour muntin bar intersects, starburst, MPS hubs...”

The First to Develop and Manufacture Laser-Welded Air Spacers

In 1979, true to Allmetal's innovative drive, the company became the first to bring together roll-forming and laser welding. Introducing the laser-welded air spacer, Allmetal answered the market's call for a stronger and more durable product.

Stainless Steel Air Spacers

In early 1989, Allmetal expanded its product line to include stainless steel air spacers. Because of their thermal qualities and longevity without outgassing, stainless steel is considered one of the best "warm edge" spacers in the industry.

“Our roll forming process incorporates the most advanced machinery in the industry. In addition to aluminum, Hi-Q steel and other materials, we are able to consistently and efficiently roll form thin-gauge stainless steel...”

In-house Tooling and Design to Provide Superior Solutions to Customers' Unique Manufacturing Requirements

To control its own tooling requirements and improve turnaround time, cost, and quality to the customer, Allmetal opened its own successful Tooling and Design Division—an integral part of Allmetal's ability to design and manufacture products to provide superior solutions to customers' unique manufacturing requirements.

"Creating some of the strongest, most advanced air spacers begins with our raw material processing. Here, anodized aluminum, painted aluminum, Hi-Q steel and stainless steel undergo an exacting slitting process..."

A Growing Line of Decorative Products and Components

Products have changed and adapted over the years to suit customers' changing tastes and demands. And although air spacer has been Allmetal's mainstay—the company now includes a full line of exciting, innovative products for the budding decorative components market. In fact, anything from decorative muntins, contour muntin bar, intersect components, MPS hubs, and related products are provided by Allmetal and available in over 30 paint colors or custom-color options.

Expanding Worldwide

Today, Allmetal continues to serve the ever-growing domestic market while rising to meet international demands. As Allmetal explores and expands into new markets in new places, its reputation precedes it—paving the way for ongoing growth and innovation.

German Plant

In response to international customers, Allmetal has expanded its operations to Europe. Its first European plant, located in Leipzig, Germany, opened in 2000 and will help serve Allmetal's European customer base.

Allmetal GmbH