332321 — Metal Window and Door Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing metal framed windows (i.e., typically using purchased glass) and metal doors. Examples of products made by these establishments are metal door frames; metal framed window and door screens; and metal molding and trim (except automotive).
Exclusions & Cross-References
- Manufacturing wood or metal covered (i.e., clad) wood framed windows and doors--are classified in U.S.
- Industry 321911, Wood Window and Door Manufacturing; and
- Manufacturing metal automotive molding and trim--are classified in Industry 336370, Motor Vehicle Metal
- Stamping.
Overview Facts
| NAICS Code | 332321 |
|---|---|
| Industry Title | Metal Window and Door Manufacturing |
| SBA Size Standard | 750 employees |
| IRS PBA Code | 332300 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 332 → 3323 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3442 - Metal Doors, Sash, Frames, Molding, and Trim (via SIC1987:3442→NAICS1997:332321→2002:332321→2007:332321→2012:332321→2017:332321→2022:332321)
- SIC 3449 - Miscellaneous Structural Metal Work (via SIC1987:3449→NAICS1997:332321→2002:332321→2007:332321→2012:332321→2017:332321→2022:332321)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 332321:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 3323
Frequently Asked Questions (FAQ)
Is 332321 a valid 2022 NAICS code?
NAICS 332321 is 'Metal Window and Door Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 750 employees.
What is the SBA size standard for NAICS 332321?
The SBA small business size standard for NAICS 332321 is 750 employees (based on employees).
What is the legacy SIC code mapping for 332321?
NAICS code 332321 maps to the legacy 1987 SIC codes: 3442 - Metal Doors, Sash, Frames, Molding, and Trim, 3449 - Miscellaneous Structural Metal Work.