NAICS 321999

Overview

The North American Industry Classification System (NAICS) is the federal standard for grouping business establishments so agencies can collect, analyze, and publish statistics on the U.S. economy. Developed under the Office of Management and Budget with the Economic Classification Policy Committee, Statistics Canada, and Mexico’s INEGI, NAICS replaced SIC when it was adopted in 1997; the system is reviewed every five years, with the current vintage designated as 2022. ²
Under 2022 NAICS, 321999 — All Other Miscellaneous Wood Product Manufacturing — covers establishments primarily engaged in manufacturing wood products not classified in sawmills; wood preservation; veneer, plywood, or engineered wood products; millwork; or wood containers and pallets. Census programs are transitioning publications to 2022 NAICS per the published implementation timeline. ³

See also on G2X:

• G2X — NAICS 321999 overview
• G2X — NAICS 321920 Wood Container and Pallet Manufacturing
• G2X — NAICS 321992 Prefabricated Wood Building Manufacturing

What this NAICS covers

• Kiln drying lumber performed by standalone establishments. ¹
• Manufacturing wood handles for brooms, hand tools, and mops. ¹
• Manufacturing wood dowels. ¹
• Manufacturing wood extension ladders. ¹
• Manufacturing cork products (except gaskets). ¹
• Manufacturing shoe trees and similar miscellaneous wood articles. ¹

Related NAICS and PSC codes

Exclusions and common misclassifications

• Wood windows, doors, cut stock, and other millwork are classified in millwork industries (e.g., 321911, 321912, 321918), not in 321999. ¹
• Wood containers and pallets belong in 321920, not in 321999. ¹
• Manufactured homes and prefabricated wood buildings belong in 321991 and 321992, respectively. ¹
• Sawmills, wood preservation, veneer, plywood, and engineered wood products are outside 321999. ¹

Frequently asked questions

• What does NAICS 321999 include?
  It includes establishments making miscellaneous wood products not classified in sawmills, veneer/plywood/engineered wood, millwork, or wood containers/pallets. Examples are kiln-dried lumber services, wood dowels and handles, shoe trees, cork products (except gaskets), and wood extension ladders. ¹

• How is NAICS 321999 different from 321920 or 321992?
  321999 excludes wood containers/pallets and prefabricated buildings. Those are covered by 321920 and 321992 (and manufactured homes by 321991). ¹

• Are kiln-drying and cork product manufacturing classified in 321999?
  Yes. The Census description lists kiln drying lumber and manufacturing cork products (except gaskets) as illustrative activities within this industry. ¹

• When did Census programs begin publishing with the 2022 NAICS vintage?
  The Census Bureau began disseminating data on a 2022 NAICS basis with the 2022 Economic Census First Look in January 2024 and plans full adoption across programs by the end of 2027, with limited exceptions on five-year surveys. ³

• Where can official 2022 NAICS descriptions be accessed?
  Census provides downloadable NAICS description files for 2022 and later, which include industry definitions used across Nonemployer Statistics and other programs. ⁴

Useful resources

• G2X — NAICS 321999 overview (internal): https://app.g2xchange.com/naics/321999
• U.S. Census — NAICS 321999 industry description and examples. ¹
• U.S. Census — Implementation of the 2022 NAICS (timeline and guidance). ³
• U.S. Census — 2022 NAICS Descriptions (reference files). ⁴

References

1. U.S. Census Bureau, NAICS Sector 31–33 Manufacturing archive page (includes definition and examples for 321999). https://www.census.gov/naics/resources/archives/sect31-33.html
2. U.S. Census Bureau, 2017 North American Industry Classification System (NAICS) Manual (definition and 1997 adoption). https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
3. U.S. Census Bureau, The Census Bureau’s Implementation of the 2022 NAICS (timeline and 2022 vintage). https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
4. U.S. Census Bureau, Industry Reference Files — 2022 NAICS Descriptions. https://www.census.gov/programs-surveys/nonemployer-statistics/technical-documentation/reference/naics-descriptions.html