(a) Illuminated signs shall be constructed of non-combustible materials. However, facings, letters, figures, decorations and structural trim thereof may be made of approved combustible plastics.
(b) Illuminated signs produced in quantity shall be constructed in accordance with the “Standard for Electric Signs” (U.L. 48) of Underwriters’ Laboratories, Inc. Custom-built signs shall be inspected and approved by the Underwriters’ Laboratories, Inc., or any approved inspection agency.
(Ord. 4778, approved 11-16-1976)