SIC Code 3211 — Flat Glass

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	3211
Title	Flat Glass
System	SIC 1987 (final edition — replaced by NAICS in 1997)

The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.

NAICS equivalents of SIC 3211

From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.

NAICS 2002	Title (2002)	Current 2022 code
327211	Flat Glass Manufacturing	327211 (same code)

Other SIC codes in 32xx

• 3221 — Glass Containers
• 3229 — Pressed and Blown Glass and Glassware, Not Elsewhere Classified
• 3231 — Glass Products, Made of Purchased Glass
• 3241 — Cement, Hydraulic
• 3251 — Brick and Structural Clay Tile
• 3253 — Ceramic Wall and Floor Tile
• 3255 — Clay Refractories
• 3259 — Structural Clay Products, Not Elsewhere Classified
• 3261 — Vitreous China Plumbing Fixtures and China and Earthenware Fittings and Bathroom Accessories
• 3262 — Vitreous China Table and Kitchen Articles
• 3263 — Fine Earthenware (Whiteware) Table and Kitchen Articles
• 3264 — Porcelain Electrical Supplies

Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.