Description Ensure your OSHA signs stand out with our Sign Helper aluminum sign plate. Our unique 18 in x 4 in aluminum sign plate with angled blue and white lines is manufactured from engineer-grade retro-reflective aluminum. Note: The Sign Holder and Blue "Stop Crew At Work" OSHA Sign Plate are shown for demonstration purposes only. Each item can be purchased separately. Click on the buttons below to view our Sign Plates and Sign Holders. View OSHA-Mandated Blue Flag Sign Plates View Our Sign Holders
