About This 3M AUTHORIZED. Official 3M reflective films and inks on durable, rustproof aluminum ensure that our signs meet all DOT requirements for outdoor parking and traffic signs. DURABLE ALUMINUM. Heavy-duty rustproof aluminum has a 10-year outdoor durability rating backed by a 3M warranty. LAMINATED. Graphics are protected from weather and abuse. Graffiti can be cleaned off. Laminated signs outlast competitive unlaminated or overcoated signs. INSTALLATION. All signs come with rounded, burr-free corners and pre-punched/pre-cleared holes. Signs mount to U-channel posts, square or round galvanized posts, wooden posts and chain link fences. CUSTOMIZABLE. Add your own wording to this Custom Sign. After placing your order, SmartSign will contact you for your artwork instructions or you can message us the customization information through Amazon. Overview Brand : SmartSign Size : 24" x 24" Color : 24" x 24" 3M EG Reflective Aluminum Material : Engineer Grade Reflective Aluminum Sign, 80 mil Mounting Type : Wall Mount Light Type : Reflective Orientation : Landscape Pre-printed : Letter Recommended Uses For Product : Warning Product Dimensions : 24"L x 24"W