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.

  • 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