"Warning - Stay Back 200 Ft, Not Responsible For Broken Windshields" Truck Label By SmartSign | 12" x 18" 3M Engineer Grade Reflective 3M AUTHORIZED. Made from Certified 3M components: inks, laminate and films. 3M Engineer Grade reflective labels shine brilliantly at night. DURABLE VINYL. Conformable vinyl has 7-year outdoor life and aggressive adhesive backing. LAMINATED. Graphics are protected from weather and abuse. Graffiti can be cleaned off. Laminated labels outlast competitive unlaminated or overcoated labels. INSTALLATION. Label is applied to existing aluminum signs. Use this label to update a legend or place a fresh, new label face onto a sign that has faded. This label DOES NOT include the aluminum backing. GIVE A HEADS UP. Convey your Stay Back warning with this sign - before you have to intercede personally.