326140 — Polystyrene Foam Product Manufacturing
NAICS 326140 is 'Polystyrene Foam Product Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,000 employees.
Description
This industry comprises establishments primarily engaged in manufacturing polystyrene foam products.
Exclusions & Cross-References
- Establishments primarily engaged in manufacturing plastics foam products (except polystyrene) are classified in
- Industry 326150, Urethane and Other Foam Product (except Polystyrene) Manufacturing.
Overview Facts
| NAICS Code | 326140 |
|---|---|
| Industry Title | Polystyrene Foam Product Manufacturing |
| SBA Size Standard | 1,000 employees |
| IRS PBA Code | 326100 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 326 → 3261 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
NAICS Structure: 326140
National Industry
Sector (2)
31-33
Manufacturing
Subsector (3)
326
Plastics and Rubber Products Manufacturing
Industry Group (4)
3261
Plastics Product Manufacturing
Industry (5)
32614
Polystyrene Foam Product Manufacturing
National Industry (6)
326140
Polystyrene Foam Product Manufacturing
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3086 - Plastics Foam Products (via SIC1987:3086→NAICS1997:32614→2002:326140→2007:326140→2012:326140→2017:326140→2022:326140)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 326140:
- 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 3261
326111 - Plastics Bag and Pouch Manufacturing...326112 - Plastics Packaging Film and Sheet (inclu...326113 - Unlaminated Plastics Film and Sheet (exc...326121 - Unlaminated Plastics Profile Shape Manuf...326122 - Plastics Pipe and Pipe Fitting Manufactu...326130 - Laminated Plastics Plate, Sheet (except ...
Frequently Asked Questions (FAQ)
Is 326140 a valid 2022 NAICS code?
NAICS 326140 is 'Polystyrene Foam Product Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,000 employees.
What is the SBA size standard for NAICS 326140?
The SBA small business size standard for NAICS 326140 is 1,000 employees (based on employees).
What is the legacy SIC code mapping for 326140?
NAICS code 326140 maps to the legacy 1987 SIC codes: 3086 - Plastics Foam Products.