DURABLE ALUMINUM CONSTRUCTION: Made from .063″ white rust-free aluminum, ensuring long-lasting performance and weather resistance. INTERNATIONAL SYMBOLS: Includes internationally recognized symbols for warning hazards, mandatory actions, hard hat requirements, and unauthorized access prohibition, enhancing clarity and understanding. BOLD TEXT: Features clear, bold text to ensure the message is easily readable from a distance. EASY INSTALLATION: Pre-drilled holes allow for easy mounting on walls, fences, or posts, ensuring visibility at key entry points of the construction site. BRIMAR GUARANTEE: Made in the USA. Our products are manufactured in our state-of-the-art facility located in Garfield, NJ.