Product details Top highlights Brand SmartSign Size 12" x 18" Color Black on White Material Aluminum Mounting Type Wall Mount Pre-printed private property 3M Authorized: signs are certified to the 3M matched component system This assures that signs are durable outside Durable aluminum: Signs use 3M reflective Engineer Grade film mounted to 63 mils thick aluminum and last upto 7 years outside. Signs do not have a low-cost plastic core. Laminated Graphics are protected from weather and abuse Graffiti can be cleaned off Laminated signs outlast competitive unlaminated or overcoated signs Rounded corners: Signs have rounded corners and burr-free corners for safe handling, longer life and a professional appearance. Installation: All signs come with burr-free corners and 3​/​8" punched and pre-cleared holes. Signs mount to U-channel posts, square or round galvanized posts, wooden posts and chain link fences. Give a message: Convey your private property, private drive message with this sign.