“Undercoating” means any aerosol product designed to impart a protective, non-paint layer to the undercarriage, trunk interior, or firewall of a motor vehicle to prevent the formation of rust or to deaden sound. The term includes, but is not limited to, rubberized, mastic, and asphaltic products.

Source. #10527, eff 2-26-14; ss by #13969, eff 5-21-24 (formerly Env-A 4104.64)