262 – Fireproof Window or Fire Window.

§  262.  Fireproof  window or fire window. "Fireproof window" or "fire
  window" means a window with metal frame and  sash,  or  frame  and  sash
  covered  with  metal,  and  provided  with  wired glass or of such other
  materials, construction and operation as the board shall specify in  its
  rules.