Section 389-N. Labeling required

(l) Each light of safety glazing material
  manufactured, distributed,  imported,  or  sold  for  use  in  hazardous
  locations  or  installed in such a location within the state of New York
  shall be permanently labeled by such  means  as  etching,  sandblasting,
  firing  of  ceramic  material,  hot-die  stamping  on the safety glazing
  material, or by other suitable  means.  The  label  shall  identify  the
  manufacturer,  and  the nominal thickness and the type of safety glazing
  material and the fact that said material meets the test requirements  of
  the American National Standards Institute Standard ANSI Z-97.1-1971.
    The label must be legible after installation.
    (2)  Such  safety  glazing  labeling  shall  not be used on other than
  safety glazing materials.
    (3) Permanent labeling  of  wire  glass,  laminated  glass  and  rigid
  plastics  shall  not  be  required where the seller or installer of such
  wire glass furnishes each buyer thereof a certificate stating that  such
  wire  glass  meets  the  test  requirements  of  the  American  National
  Standards Institute Standard ANSI Z-97.1-1972.