Safe Bond & Quick InstallationThe flexible and strong adhesive backing on this aluminum exit sign creates a safe and secure bond to any surface, 30 seconds for easy installation. Not included pre-drilled holes or hardware. Its will not curl or shrink like Stickers. Non plastic and Non Vinyl. 50 Feet Visibility&No Expiration DateThese 12 x 7 Inches sign included 2 removeble arrows has red background are visible from up to 50 feet away. The glow in the dark sign does not have an expiration date. They continue to absorb ambient light or sunlight to charge and then release the light every time more than 90min in a darkened environment for over 30 years. Free Maintenance & Wide Applications Not require electrical wiring or battery backup. The photoluminesent exit sign both for indoor and outdoor use, also meet your safety needs from offices, schools, hospitals, churches, banks and public buildings. It is great for waterproof, heat and cold resistance. SpecificationsRecyclableAluminum | 2 Removable Arrows With Mark Area|Scratch Resistant|Long-lasting UV Inks|Single Sided |Strong Adhesive Backing| Red Background |12" by 7" size