Illustrated Safety Signs for use in laboratories, shops, factories — wherever safety is a concern. Provide simple pictorial representations of messages. Color-coding system emphasizes type of hazard. Danger — Red and Black; Fire — Red; Caution — Red and Black on Yellow; Command — Blue; Instructional Safety — Green. Danger and Caution signs have OSHA headings. All signs meet OSHA regulations. Constructed of aluminum, silk-screened with enamel. Dimensions: 30.5H x 25.5W cm (12 x 10""). With safety corners and mounting holes.