Industry: 3211—Flat Glass
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, flatPicture glass
Cathedral glassPlate glass blanks for optical or ophthalmic uses
Float glassPlate glass, polished and rough
Glass, colored: cathedral and antiqueSheet glass
Glass, flatSheet glass blanks for optical or ophthalmic uses
Insulating glass, sealed units—mitseSkylight glass
Laminated glass, made from glass produced in the same establishmentSpectacle glass
Multiple-glazed insulating units—mitseStructural glass, flat
Opalescent flat glassTempered glass—mitse
Ophthalmic glass, flatWindow glass, clear and colored
Optical glass, flat
Codes Titles Number of US Businesses
3211Flat Glass740
321100Flat glass200
32110000Flat glass200
321101Transparent optical glass, except lenses19
32110100Transparent optical glass, except lenses7
32110101Ophthalmic glass, flat0
32110102Optical glass, flat10
32110103Spectacle glass2
321102Strengthened or reinforced glass49
32110200Strengthened or reinforced glass8
32110201Laminated glass18
32110202Tempered glass23
321103Construction glass418
32110300Construction glass48
32110301Building glass, flat18
32110302Insulating glass, sealed units44
32110303Skylight glass19
32110304Structural glass12
32110305Window glass, clear and colored277
321104Plate and sheet glass24
32110400Plate and sheet glass17
32110401Plate glass, polished and rough4
32110402Sheet glass3
321199Flat glass, nec30
32119901Antique glass17
32119902Cathedral glass2
32119903Float glass6
32119904Opalescent glass, flat0
32119905Picture glass5