DURABLE ALUMINUM: 'No Trespassing After Business Hours' signs are made of 63 mil thick rustproof aluminum. They are laminated for protection and use 3M reflective High-Intensity Grade film, assuring more than 10 year durability. DURABLE ALUMINUM: 'No Trespassing After Business Hours' signs are made of 63 mil thick rustproof aluminum. They are laminated for protection and use 3M reflective High-Intensity Grade film, assuring more than 10 year durability. EASY INSTALLATION: All signs come with rounded, burr-free corners and 3/8 inch punched and pre-cleared holes. Signs mount to U-channel posts, square or round galvanized posts, wooden posts, and chain-link fences. 3M AUTHORIZED: 3M's "High Intensity" Grade Reflective parking and traffic signs offer up to three times more reflectance than engineer grade reflective signs. They offer great reflectance straight on and even better from an angle. LAMINATED PROTECTION: With lamination, graphics are protected from weather and abuse to preserve a fresh look. Graffiti can be cleaned off too. Clear UV laminate resists chemicals, UV rays, water, and abrasion. PACK CONTENTS: One 18 x 12 inch red and white aluminum sign. Reflective Signs Are Hard to Ignore
Reflective signs illuminate when struck by light from headlights or any other source. This makes the message readable even in dark and low lighting.

3M High Intensity ["HI"] Reflective
3M High Intensity reflective signs offer exceptional reflectance - especially when approached at an angle. 3M High Intensity signs have 10-year outdoor warranty.

USA's Oldest Sign Manufacturer
We are the biggest sign manufacturing company in the US. Our signs have served the progression of our national security sign designs and specifications over the years. Our Property Warning Signs are the exact same signs that you see on public roads. We even have countless municipality sectors as our clients.

Industry Leading Durability
3M High Intensity signs have a 10-year outdoor warranty, but most signs last much longer. Our 63 mil thick No Trespassing Sign is laminated for enhanced performance. You can clean off graffiti and your graphics are protected. Unlike many other signs, our No Trespassing After Business Hours Sign uses industry-leading 3M inks and not off-brand or other low-durability inkjet pigments that fade in a year or two.