How does the poster have to be hung? A How does the poster have to be hung? There is not a specific requirement for how the poster is hung, other than it must be displayed and visible. The poster may be printed on any thickness or type of paper and may be laminated and/or framed if desired. Back to Top How long do I have to keep the poster up? Where can I find a catalogue of County of Ventura enterprise systems covered by SB 272?