Combination Door Company

What Combination Door Company does

Combination Door Company is a privately held, for-profit manufacturer and installer of commercial doors and hardware products, headquartered in North Fond Du Lac, Wisconsin. Founded in 1912, the firm has operated in the commercial building products sector for over a century, with a stated headcount range of 11–50 employees indicating a small, specialized industrial business. Its scope, as described in available firmographic data, spans both manufacturing and installation services for the commercial sector, suggesting an integrated model where it produces doors and related hardware and delivers them through on-site installation for commercial customers.

The company's product surface is described in broad terms — a "wide range of high-quality doors and hardware products" for the commercial sector — with no further detail on specific SKUs, materials, fire ratings, security ratings, or hardware categories available in the source material. There is no disclosed information on proprietary technology, certifications, brand partnerships, or distributor relationships. The corporate website (combinationdoor.com) returned only a verification/loading screen during data collection, and all detailed fields — pricing, technology stack, customer logos, management team, partnerships, funding history, revenue, and operating geographies — are empty in the input.

From a business model standpoint, the company appears to generate revenue through a combination of product sales (manufactured doors and hardware) and installation services to commercial buyers. No pricing models, contract structures, customer segmentation, go-to-market channels, or revenue figures are disclosed in the source data. The combination of small headcount, long operating history, single disclosed city of operations, and absence of any funding or M&A activity suggests a stable, owner-operated regional industrial business rather than a venture-backed or actively scaling enterprise; however, the lack of substantive source content materially limits any deeper characterization.

Name

Combination Door Company

Website

https://combinationdoor.com

Company type

Private

Founded year

1912

Headcount range

11–50 employees

Short description

Combination Door Company is a privately held, Wisconsin-based manufacturer and installer of commercial doors and hardware, founded in 1912 and operating with 11–50 employees serving the commercial building sector.

Ownership category

akta.pro rank

Product category

Commercial Doors and Hardware

NAICS

Metal Window and Door Manufacturing (332321), Hardware Retailers (44414)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442), Cutlery, Handtools & General Hardware (3420)

akta.pro primary industry

Commercial & Industrial Doors (Sectional, High-Speed, Fire, Security) (IMADAIAF)

akta.pro secondary industry

Architectural Hardware & Door Controls (Hinges, Locks, Closers, Panic Devices) (IMADAIAI)

Keywords

• Commercial doors
• Door hardware
• Door installation
• Commercial overhead doors
• Industrial door systems

Headquarters

HQ city

North Fond Du Lac

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure

Core offering

Combination Door Company manufactures and installs a wide range of high-quality doors and hardware products for the commercial sector. The company is based in North Fond Du Lac, United States, and has been operating since 1912, supplying door and hardware solutions to commercial customers.

Differentiator

Problem solved

Functional benefit

Products and services

• Commercial Doors and Hardware

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves1 record

Broad incumbents

• Allegion: A pure-play commercial security and door hardware company whose locks, closers, and electronic access products sit on most commercial doors in North America. Highly comparable to Combination Door's hardware product line, though Allegion is a publicly traded global incumbent rather than a regional manufacturer-installer.
• ASSA ABLOY: The global leader in door openings and architectural hardware, with brands covering commercial doors, frames, and hardware. Comparable as the dominant broad incumbent in the exact product categories Combination Door serves.
• Ceco Door (ASSA ABLOY): A long-standing commercial hollow metal door and frame brand now owned by ASSA ABLOY, serving offices, healthcare, and education with standardized and custom commercial openings. Comparable to Combination Door on the commercial door manufacturing side, with much broader specification presence.
• Clopay Corporation: Largest U.S. manufacturer of garage doors, including commercial sectional and rolling steel doors. Comparable on the commercial/industrial door manufacturing side, though more concentrated in sectional garage-style products.
• JELD-WEN: Global manufacturer of doors and windows, including commercial wood and composite door assemblies. Comparable on the manufacturing side of commercial doors, though JELD-WEN operates at significantly larger scale and across many product categories.
• Masonite: One of North America's largest door manufacturers, with significant commercial interior door and architectural wood door lines. Comparable as a door manufacturer with broad product breadth, though Masonite is far larger and more residential-tilted than Combination Door.

Regional players

• Midwest Wholesale Hardware: Regional Midwest distributor and supplier of commercial door hardware, hollow metal doors, and architectural openings to contractors. Comparable as a regional channel competitor for commercial door and hardware specification work in Combination Door's home geography.

Direct peers

• Cornell Iron Works: U.S. manufacturer of commercial and industrial rolling steel doors, grilles, and counter doors with installation services. Directly comparable on commercial/industrial door manufacturing and installation, though typically focused on larger-format openings.
• Raynor Garage Doors: Manufacturer of commercial and industrial overhead sectional doors, rolling steel doors, and high-speed doors with a national dealer/installer network. Comparable commercial door offering and similar manufacturer-plus-installer go-to-market model.
• Overhead Door Corporation: One of the most established U.S. manufacturers of commercial and industrial doors, including sectional, rolling steel, and high-speed doors, with a national installation network. Directly comparable to Combination Door's commercial door manufacturing-and-installation offering, though at much greater scale.

Market position

Strengths3 records

Weaknesses4 records

Competitive moat2 records

Key risks4 records

Key highlights4 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Combination Door Company