International Building Code 2611.1
General. Light-transmitting plastic interior wall signs
shall be limited as specified in Sections 2611.2 through 2611.4.
Light-transmitting plastic interior wall signs in covered mall
buildings shall comply with Section 402.15. Light-transmitting
plastic interior signs shall also comply with Section 2606.
International Building Code 2611.2
Aggregate area. The sign shall not exceed 20 percent
of the wall area.
514 2006 INTERNATIONAL BUILDING CODE.
International Building Code 2611.3
Maximum area. The sign shall not exceed 24 square
feet (2.23 m2).
International Building Code 2611.4
Encasement. Edges and backs of the sign shall be fully
encased in metal.