SIC 3821 — Laboratory Apparatus and Furniture
Description & Classification
SIC code 3821 representing 'Laboratory Apparatus and Furniture' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 337127 - Institutional Furniture Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:337127→2012:337127→2017:337127→2022:337127)
- NAICS 333415 - Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:333415→2012:333415→2017:333415→2022:333415)
- NAICS 333998 - All Other Miscellaneous General Purpose Machinery Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:333997→2012:333997→2017:333997→2022:333998)
- NAICS 339113 - Surgical Appliance and Supplies Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:339113→2012:339113→2017:339113→2022:339113)
- NAICS 333248 - All Other Industrial Machinery Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:333298→2012:333249→2017:333249→2022:333248)
- NAICS 333994 - Industrial Process Furnace and Oven Manufacturing (via SIC1987:3821→NAICS1997:339111→2002:339111→2007:333994→2012:333994→2017:333994→2022:333994)
Classification Details
| SIC Code | 3821 |
|---|---|
| Industry Title | Laboratory Apparatus and Furniture |
| Division | Division D: Manufacturing |
| Major Group | Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 3821:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 38 Hub — View other legacy industries in this business division.
Related Industries in Major Group 38
Frequently Asked Questions (FAQ)
What industry does SIC code 3821 represent?
SIC 3821 is 'Laboratory Apparatus and Furniture', a 4-digit Standard Industrial Classification (SIC) code under Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 337127 (Institutional Furniture Manufacturing), 333415 (Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing).
What is the modern 2022 NAICS mapping for SIC 3821?
SIC code 3821 maps to modern NAICS codes: 337127 - Institutional Furniture Manufacturing, 333415 - Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing, 333998 - All Other Miscellaneous General Purpose Machinery Manufacturing, 339113 - Surgical Appliance and Supplies Manufacturing, 333248 - All Other Industrial Machinery Manufacturing, 333994 - Industrial Process Furnace and Oven Manufacturing.