My Sign Center Please Be A Good Neighbor, Please Pick Up After Your Dog Sign, No Dog Poop Sign, 3M Engineer Grade Prismatic .080 Reflective Outdoor Aluminum, 18" x 12", A87-101RA Made in the USA. Pre-Drilled Holes for Wall, Post or Fence Mounting. Up To 7 Years Outdoor. Made Out of 3M Engineer Grade Prismatic .080 Reflective Aluminum. A Clear Polyester Over-Laminate Is Added to Give it Extra Protection with A Nice Glossy Look.