Accuform, SBMEQM715VA10, 20" x 14" Bilingual OSHA Caution Safety Sign "Only Authorized Personnel Permitted To Operate This Machine" Aluminum Features: UV protective coating Withstands splashes and washdowns Endures outdoor environmental conditions Service temperature range: -40° to 250°F Provides the strength of metal, yet never rusts Rounded corners and 3/16" mounting holes on most sizes, will be adjusted for larger sizes