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Focus on Hörmann Factory Series - Inside Hörmann Montgomery: Where Legacy Meets Innovation

Blog #4 transports you to Montgomery, Illinois. It may be a small town, but it's home to more than 60 years of garage door innovation. From the invention of the industry's first high-density polyethylene door to today's FingerGuard™ pinch-resistant sections, this facility has been shaping the way North America builds — and it's still going strong.
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Focus on Hörmann Factory Series - Inside Hörmann Montgomery: Where Legacy Meets Innovation

Blog #4 transports you to Montgomery, Illinois. It may be a small town, but it's home to more than 60 years of garage door innovation. From the invention of the industry's first high-density polyethylene door to today's FingerGuard™ pinch-resistant sections, this facility has been shaping the way North America builds — and it's still going strong.

From the Midwest to North America: Hörmann's Roots in the US

A Legacy Built on Innovation

Hörmann's North American story begins in Montgomery, Illinois — but the foundation was laid decades earlier by General American Door Company (GADCO).

Founded in 1961 as General Aluminum Company, GADCO spent more than 40 years earning a reputation for quick turnarounds, innovative products, and customer-first service. What started as a residential aluminum siding operation grew into a garage door industry leader, with over 175,000 square feet of production capability and a distribution network spanning the eastern half of the United States.

Four Decades of Firsts

GADCO's track record of product innovation set it apart. In 1974, the company invented and patented one of the garage door industry's first true breakthrough products — the Therm-O-Air, featuring high-density polyethylene in an all-aluminum framework. Over the following decades, GADCO continued introducing firsts: the Liberty® steel door in 1979, the world's first raised-panel high-density polyethylene door in 1990, and a string of energy-efficient, design-forward products through the early 2000s.

Hörmann Carries the Legacy Forward

In 2006, the Hörmann Group acquired GADCO and continued operations in Montgomery, Illinois — inheriting not just a facility, but a culture of craftsmanship and customer commitment that aligned naturally with Hörmann's own values. It was the beginning of a new chapter, built on a very strong foundation.

Joe Kee, GADCO President beginning in 1988, attributed the company's 40-year success to its attention to customer service through quick responses to calls, an extensive distribution network, innovative products, and always striving for trouble-free service.

FingerGuard™ Door Manufacturing – All Day, Every Day

Step onto the Montgomery production floor and you'll notice something rare: focus. This facility is Hörmann North America's dedicated headquarters for pinch-resistant, FingerGuard™ door manufacturing — and nothing else. Every door that rolls off this line is built pinch-resistant, which means customization isn't a special request here. It's the default.

Every tongue-and-groove model in our lineup has a FingerGuard™ counterpart. Look for "Safe" in the model name, and you've found it.

Experience runs deep at Montgomery, too. Seventeen employees have called this campus home for more than 20 years — a track record that puts Hörmann Montgomery in the running for one of the most experienced sectional garage door facilities in North America.

Manufacturing Innovation Built for Your Projects

Hörmann Montgomery operates five main product lines, each producing FingerGuard™ models. FingerGuard™ pinch-resistant sections are constructed using deep tongue-and-groove joints and hinges that provide an air-tight seal and prevent finger injuries inside and outside:

  • Pan Doors – Pro Safe 2100 | 225P/224P

  • Sandwich Doors – Therma Safe 3200 | 325S/324S | 425U

  • Carriage Door – Deco Safe 5250

  • Aluminum Full-View Doors – Classic Safe 7200 | 720A

Modern manufacturing technology isn't just about efficiency — it's about what efficiency contributes to your projects: faster custom solutions, consistent quality, and the ability to meet installation timelines without sacrificing performance.

Product Lines Manufactured at Montgomery

Residential Garage Doors

Montgomery produces five residential garage door models at a rate of hundreds of doors per week, across four categories:

Traditional Model: Pro Safe 2100

2" uninsulated 25-gauge steel | Optional polystyrene insulation | R-7.4

Sandwich Model: Therma Safe 3200

2" polystyrene insulated steel | R-10 (U-0.29)

Carriage Model: Deco Safe 5250

Better rated | 2" polystyrene insulated steel | R-10.5

Contemporary / Full-View Model: Classic Safe 7200

Best rated | Full-view aluminum | 1-¾" thick anodized aluminum

Commercial Sectional Door Models

Montgomery manufactures four commercial sectional door models, all featuring FingerGuard™ pinch-resistant sections:

Pan Models: 225P / 224P

Standard to industrial duty, 25-24 gauge | Hot-dipped galvanized with baked polyester finish | R-7.4

Sandwich Models: 325S / 324S

2" insulated (heavy to industrial duty, 25-24 gauge) | Hot-dipped galvanized with bakes polyester finish | R-10.5

Full-View Commercial Grade Aluminum Model: 720A

1-¾" commercial glazed aluminum FPR | 4 solid color options + Galaxy Paint System, 6 insert styles, 8 glass options

Polyurethane Insulated Model: 425U

1-¾" galvanized steel treated with a bonding adhesive followed by a durable primer coating | Galaxy Paint System | Our only smooth, flush commercial model | May be paired & matched with the 720A for a completely coordinated door layout

Built to Last, Made to Perform

More than 60 years after GADCO's first patent, Montgomery is still doing what it's always done — building doors that hold up. The plant's five production lines and five residential models carry forward the same standard Joe Kee described decades ago: quick response, consistent quality, and products that perform.

That's the through-line across every Hörmann facility, and Montgomery is where it started.

Located in the country's heartland, the Montgomery facility also houses the Chicagoland Sales Center, serving dealers across the greater Chicago area. Housed in the same building as manufacturing, it's one of Hörmann's seven FlexLine™ Light Manufacturing Services locations — giving dealers on-site access to more inventory and key local customizations, including custom-cut springs, glazed door sections, and stock door sections, so they can respond quickly to jobsite needs.

Comprehensive Support: Your Success Is Our Priority

Architectural Support & AIA Continuing Education

Architects and designers can expand their knowledge base by completing Hörmann’s AIA Continuing Education Courses, each worth 1.0 LU/HSW credit:

  • Speed is the New Green: Advanced Fundamentals for High-Performance Doors

  • From Curb Appeal to Code Compliance — The Sectional Garage Door Deep Dive

  • Safe, Smart, and Strong — Specifying Dock Levelers and Accessories for Industrial

Factory Experience Tours — Earn 1.5 LU/HSW Credit

Hörmann offers behind-the-scenes Factory Experience Tours at each of their six North American facilities — each worth 1.5 LU/HSW credit. Tours include

  • VIP behind-the-scenes factory access

  • Up-close view of manufacturing technology

  • Meetings with engineering and production teams

  • Insight into how manufacturing capabilities impact project outcomes

Register at: hormann.us/education/

What's Next: Focus on Hörmann Factories Series

This is the fourth story in our six-part series exploring Hörmann North America's manufacturing facilities. Be sure to read every one:

  • Rubber Doors – Oro-Medonte, ON Canada – Read more here

  • Sectional Garage Doors – Puyallup WA – Read more here | Sparta TN, (Coming soon)

  • High-Performance Doors – Burgettstown, PA (Coming soon)

  • Loading Dock Equipment – Imperial, PA – Read more here

Each blog will reveal how manufacturing innovation, quality control, and support infrastructure combine to deliver the products and partnerships that drive your success.

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