2006 New York Code - Portable Booth For Temporary Exhibitions.

 
    § 19.09. Portable  booth  for  temporary  exhibitions.    Where motion
  pictures are exhibited daily for not more than one month,  or  not  more
  often  than three times a week, in educational or religious institutions
  or bona fide social, scientific, political or athletic clubs, a portable
  booth may be substituted for the booth required in  sections  19.01  and
  19.03  of  this article. Such booth shall have a height of not less than
  six feet and an area of not less than twenty square feet  and  shall  be
  constructed  of  asbestos  board,  sheet  steel  of  no  less gauge than
  twenty-four; or some other approved fireproof  material.  Such  portable
  booth  shall  conform  to  the  specifications  of section 19.03 of this
  article with reference to windows and door, but not  with  reference  to
  vent  flues.  The  floor  of  such  booth  shall  be  elevated above the
  permanent support on which it is placed by a space of at least  one-half
  inch,  sufficient  to  allow the passage of air between the floor of the
  booth and the platform on which the booth rests, and the booth shall  be
  insulated  so  that it will not conduct electricity to any other portion
  of the building.