321911 — Wood Window and Door Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing window and door units, sash, window and door frames, and doors from wood or wood clad with metal or plastics (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Establishments primarily engaged in fabricating wood windows or wood doors at the construction site are
- classified in Industry 238350, Finish Carpentry Contractors.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 2431 - Millwork (via SIC1987:2431→NAICS1997:321911→2002:321911→2007:321911→2012:321911→2017:321911→2022:321911)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3220 — Woodworking Machines
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 321911 valid in 2022? ▾
Yes, 321911 is a valid 6-digit 2022 NAICS national industry code representing 'Wood Window and Door Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 321911? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,000 employees for NAICS code 321911 (Wood Window and Door Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 321911? ▾
According to official Census Bureau concordance tables, NAICS code 321911 (Wood Window and Door Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 2431 - Millwork.
Related Pages & Tools
Further regulatory reference links for NAICS code 321911:
- 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.
- NAICS 321911 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Wood Window and Door Manufacturing).
- 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.