NAICS 332321 Quarterly Industry Report
Metal Window and Door Manufacturing
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 332321Sector: 33Updated: Q1 2026
About This Report
This report provides industry data for Metal Window and Door Manufacturing (NAICS 332321) based on official government sources including the U.S. Census Bureau 2022 NAICS classification[5] and SBA size standards[7]. Published by Fair Market Value and updated quarterly, it incorporates producer price data from the Federal Reserve FRED database[6] and employment metrics tracked by the Bureau of Labor Statistics. The editorial analysis reflects the independent assessment of FairMarketValue.com's research team, with all quantitative claims sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the metal window and door manufacturing industry.
Industry Definition & Overview
Metal Window and Door Manufacturing (NAICS 332321) encompasses establishments primarily engaged in manufacturing metal framed windows (typically using purchased glass) and metal doors. This industry includes the production of metal door frames, metal framed window and door screens, metal molding and trim (excluding automotive applications), garage doors, fire doors, metal louver windows, jalousies, and related architectural components for residential and commercial building applications Census Bureau NAICS 332321[5]. Construction, renovation, and maintenance markets drive demand across the United States.
Establishments classify products either as primary metal windows and doors or secondary products including storm combinations and weather stripping. Industry operations rely on purchased glass components and specialize in the structural and functional aspects of window and door assembly. Competition comes from wood window manufacturers (NAICS 321911) and plastics-based alternatives. Most firms are small to mid-sized, serving regional construction and renovation markets rather than national distribution channels.
The Federal Reserve FRED database[6] tracks producer price indices for this industry dating back to January 1947, providing long-term performance benchmarks. Strong demand for building envelope products and energy efficiency improvements support market activity. Building codes increasingly mandate high-performance windows, pushing manufacturers to adopt thermal break technology and multi-pane glazing systems. Steel, aluminum, and vinyl-clad metal frames each target distinct market segments based on price point, durability requirements, and aesthetic preferences.
What's Included in This Industry
- Metal framed windows with purchased glass
- Metal entry and exterior doors
- Metal door frames and jamb assemblies
- Metal window and door screens
- Metal louver windows and jalousies
- Garage doors and hangar doors manufactured from metal
- Fire doors and fire-rated metal door assemblies
- Metal molding and trim for doors and windows (excluding automotive)
- Metal weather stripping and weatherization products
- Metal combination screens and storm doors
- Metal window casements and sashes
- Metal skylights and roof access products
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Fabricated Metal Product Manufacturing | 332 |
| Industry Group | Architectural and Structural Metals Manufacturing | 3323 |
| NAICS Industry | Ornamental and Architectural Metal Products Manufacturing | 33232 |
| National Industry | Metal Window and Door Manufacturing | 332321 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 332322 | Sheet Metal Work Manufacturing | Sheet Metal Work Manufacturing shares similar metalworking processes and equipment with metal window and door producers, though 332322 focuses on custom sheet metal fabrication such as ducts, roofing, and gutters rather than architectural products for windows and doors. |
| 332323 | Ornamental and Architectural Metal Work Manufacturing | Ornamental and Architectural Metal Work Manufacturing overlaps with metal window and door manufacturing in serving building construction markets, but 332323 specializes in decorative and structural elements like railings, staircases, and fire escapes rather than functional window and door assemblies. |
| 321911 | Wood Window and Door Manufacturing | Wood Window and Door Manufacturing represents the primary alternative material for window and door applications, with many companies serving the same building construction and renovation markets using different primary materials. |
| 326199 | All Other Plastics Product Manufacturing | All Other Plastics Product Manufacturing includes plastic window and door components and plastic framing materials that compete with and complement metal windows and doors in residential and commercial building applications. |
| 332311 | Prefabricated Metal Building and Component Manufacturing | Prefabricated Metal Building and Component Manufacturing produces complete metal building systems that incorporate metal windows and doors as components, representing a downstream integration point for metal window and door products. |
| 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing | All Other Miscellaneous Fabricated Metal Product Manufacturing encompasses metal fasteners, hardware, and specialty components used in assembling metal window and door units and related architectural metal products. |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 13.5% | 136 |
| 2 | Florida | 11.5% | 116 |
| 3 | Texas | 9.0% | 91 |
| 4 | New York | 6.8% | 69 |
| 5 | Pennsylvania | 4.2% | 42 |
| 6 | Georgia | 4.1% | 41 |
| 7 | Ohio | 4.0% | 40 |
| 8 | Arizona | 3.9% | 39 |
| 9 | New Jersey | 3.1% | 31 |
| 10 | North Carolina | 2.9% | 29 |
% Of Establishments
0%
14%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
160
Total SBA Loans
$65.4M
Total Loan Volume
$409K
Average Loan Size
10 yrs
Average Loan Term
10.23%
Average Interest Rate
2,128
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA establishes a size standard of 750 employees[7] for NAICS 332321 Metal Window and Door Manufacturing, meaning companies with 750 or fewer full-time and part-time employees qualify as small businesses. Small firms in this industry are eligible for SBA loan programs and may compete for federal contracting opportunities[8], including set-asides and other government procurement programs. To participate in federal contracting, companies must register with SAM and obtain a Unique Entity Identifier (UEI). Eligible businesses can access SBA 7(a) loans[9] for working capital, equipment, and acquisition financing, while 504 loans[10] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | First Bank of the Lake | 16 | $21.3M | $1.3M |
| 2 | First Service Bank | 16 | $15.3M | $955K |
| 3 | Bank of America, National Association | 24 | $7.6M | $317K |
| 4 | Regions Bank | 16 | $5.6M | $350K |
| 5 | Northeast Bank | 24 | $5.3M | $221K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 332321?
NAICS 332321 includes manufacturers of metal-framed windows and doors, producers of metal window and door screens, makers of metal garage doors and fire doors, and manufacturers of metal architectural trim and molding (excluding automotive applications) Census Bureau NAICS 332321[5].
How is the metal window and door manufacturing industry structured?
The industry comprises numerous establishments ranging from small local fabricators serving regional markets to larger manufacturers supplying national distributors and builders. Per SBA contracting guidance[8], the industry is highly fragmented with no single company dominating market share. Most activity occurs in the construction and renovation sectors.
What is the SBA size standard for metal window and door manufacturers?
The SBA establishes a 750-employee size standard[7] for NAICS 332321, meaning companies with 750 or fewer employees qualify as small businesses for federal contracting and SBA loan program purposes.
What NAICS codes are most closely related to metal window and door manufacturing?
Closely related codes include 332322 (Sheet Metal Work Manufacturing) and 332323 (Ornamental and Architectural Metal Work Manufacturing), which share metalworking techniques and equipment. Code 321911 (Wood Window and Door Manufacturing) represents the primary material alternative Census Bureau NAICS[11].
What industries work most closely with metal window and door manufacturers?
Commercial and institutional building construction (NAICS 236220) is the primary customer, with contractors specifying metal windows and doors for office buildings, schools, and hospitals. Residential remodelers (NAICS 236118) drive aftermarket demand. Paint and coating manufacturers (NAICS 325510) supply protective finishes for these products.
What specific products and activities are included in NAICS 332321?
Included products are metal door frames and sashes, metal framed window screens, metal garage doors, fire-rated metal doors, metal louver windows, jalousies, metal molding and trim, metal combination screens, storm doors, metal casements, and skylights Census Bureau NAICS 332321[5].
Are metal window and door manufacturers eligible for SBA loans and government contracts?
What geographic regions have the most metal window and door manufacturing activity?
Manufacturing activity distributes across states with substantial construction and renovation markets. The Bureau of Labor Statistics[12] tracks employment data for fabricated metal product manufacturing, showing concentrations in states like Ohio, Texas, California, and Pennsylvania where construction demand drives production volumes.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]Census Bureau NAICS 332321 census.gov
- [6]Federal Reserve FRED database fred.stlouisfed.org
- [7]SBA size standards sba.gov
- [8]federal contracting opportunities sba.gov
- [9]SBA 7(a) loans sba.gov
- [10]504 loans sba.gov
- [11]Census Bureau NAICS census.gov
- [12]Bureau of Labor Statistics bls.gov
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