Bilingual Construction Area Authorized Personnel Only Sign This bilingual “Caution Construction Area Authorized Personnel Only” sign clearly restricts access to designated work zones. Displayed in both English and Spanish, it ensures clear communication for workers, contractors, and visitors while reinforcing site safety protocols. Commonly used on construction sites, industrial projects, and maintenance areas, this sign is essential for controlling entry and preventing unauthorized access to hazardous zones. Durable Aluminum Sign for Outdoor Use This product is made from high-quality aluminum designed for long-term performance in demanding environments. Rigid, rust-resistant aluminum construction Weatherproof for indoor and outdoor use High visibility for clear communication Long-lasting durability in construction settings Ideal for permanent site signage 18 × 24″, 24 × 36″ Mounting: Four ¼″ holes (one at top, one at bottom) 36 × 48″ Mounting: Four 5/16″ holes (one at top, one at bottom) Ideal for Safety Applications Construction and building sites Industrial and maintenance projects Renovation and development areas Restricted access work zones Job sites requiring controlled entry Supports workplace safety by clearly limiting access to authorized personnel and improving compliance with site safety requirements.