All Persons In This Area May Be Video Recorded Sign - 18x18 Reflective Sign made with 3M Engineer Grade Prismatic sheeting Heavy-gauge (.063) rust-free Aluminum Easy Mounting: Pre-drilled 3/8-inch with holes at top and bottom center Reflective Sheeting and Inks rated by 3M for at least 7-years no-fade service High-Quality Video Surveillance Signs Deter Criminal Activity