"Emergency Exit - Do Not Block" Label by SmartSign | 5" x 7" 3M Reflective Laminated Vinyl DURABLE VINYL. Conformable vinyl has 7 year outdoor life and aggressive adhesive backing. 3M AUTHORIZED. Made from Certified 3M components: inks, laminate and films. 3M Engineer Grade reflective labels shine brilliantly at night. LAMINATED. UV-resistant, weatherproof overlaminate protects the label from moisture, solvents, chemicals, abrasion and fading. EASY TO CLEAN. Laminated vinyl labels can be easily wiped off to remove dirt, dust, or grease. INSTALLATION. Labels stick to flat or curved surfaces and can be used indoors or outdoors.