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Alert workers with our 3x5 Warning Arc Flash And Shock Hazard Appropriate PPE Required Failure Sign, made from 4 mil adhesive vinyl. This compact sign adheres securely to clean, dry surfaces in electrical panels, machinery, or substations, warning of arc flash and shock risks. Weather- and corrosion-resistant, it's ideal for indoor or outdoor use. Ensure OSHA-compliant PPE use with this clear, durable sign.