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US Standard Industrial Classification (SIC) Code Lookup

Division: D - Manufacturing

US-SIC Code 3211 - Flat Glass

Industry Description

Establishments primarily engaged in manufacturing flat glass. This industry also produces laminated glass, but establishments primarily engaged in manufacturing laminated glass from purchased flat glass are classified in Industry 3231.

Business Examples

Common types of business activities within US SIC 3211 - Flat Glass are:

  • Building glass, flat
  • Cathedral glass
  • Float glass
  • Glass, colored: cathedral and antique
  • Glass, flat
  • Insulating glass, sealed units-mitse
  • Laminated glass, made from glass produced in the same establishment
  • Multiple-glazed insulating units-mitse
  • Opalescent flat glass
  • Ophthalmic glass, flat
  • Optical glass, flat
  • Picture glass
  • Plate glass blanks for optical or ophthalmic uses
  • Plate glass, polished and rough
  • Sheet glass
  • Sheet glass blanks for optical or ophthalmic uses
  • Skylight glass
  • Spectacle glass
  • Structural glass, flat
  • Tempered glass-mitse
  • Window glass, clear and colored

IBISWorld Industry Research Report

Glass Product Manufacturing in the US (32721)

Revenue 2026

$35.3bn

Growth 2026

-0.11%

Key Trends

  • The residential housing sector, which is the industry's largest market, has grown steadily over the past five years

  • Industry revenue is expected to slow following the reopening of the economy after the COVID-19 pandemic

  • Exports will increase over the next five years

Products and Services

US-SIC Hierarchy 3211 - Flat Glass

US-SIC Code 3211 - Flat Glass sits in the 2-digit Flat Glass sector. US SIC codes can be 2 to 8 digits and the further along the hierarchy, the more detailed and specific the category will be.

Division: D

Division Title: Manufacturing

2 Digits 3 Digits 4 Digits

Extended US-SIC Hierarchy for 3211 - Flat Glass

For business marketing and targeting, US SIC Codes have been extended to provide more specific classifications within US-SIC 3211 - Flat Glass. Extended US SIC Codes are being continuously updated to reflect the current business environment.

6 Digit SIC Codes

  • 321101 Glass-manufacturers
  • 321103 Doors-glass-manufacturers

8 Digit SIC Codes

  • 32110000 Flat glass
  • 32110100 Transparent optical glass, except lenses
  • 32110101 Ophthalmic glass, flat
  • 32110102 Optical glass, flat
  • 32110103 Spectacle glass
  • 32110200 Strengthened or reinforced glass
  • 32110201 Laminated glass
  • 32110202 Tempered glass
  • 32110300 Construction glass
  • 32110301 Building glass, flat
  • 32110302 Insulating glass, sealed units
  • 32110303 Skylight glass
  • 32110304 Structural glass
  • 32110305 Window glass, clear and colored
  • 32110400 Plate and sheet glass
  • 32110401 Plate glass, polished and rough
  • 32110402 Sheet glass
  • 32119900 Flat glass, nec
  • 32119901 Antique glass
  • 32119902 Cathedral glass
  • 32119903 Float glass
  • 32119904 Opalescent glass, flat
  • 32119905 Picture glass

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US SIC Code Directory

Each US SIC Code is part of a Division, which corresponds with a numerical range. Select a Division category from the table below, then drill down to discover the industries within that Division.

Division US-SIC Code Sector title
A 01-09 Agriculture, Forestry, and Fishing
B 10-14 Mining
C 15-17 Construction
D 20-39 Manufacturing
E 40-49 Transportation, Communications, Electric, Gas, and Sanitary Services
F 50-51 Wholesale Trade
G 52-59 Retail Trade
H 60-67 Finance, Insurance, and Real Estate
I 70-89 Services
J 90-99 Public Administration

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