Best 18 Inch Industrial Warning Signs of 2026

The SmartSign Handicap Parking sign is made from sturdy aluminum that won’t rust and can last up to 10 years outdoors, giving you long-lasting use without worry. It’s designed for easy installation, with pre-drilled holes that fit various types of posts and fences, saving you time and effort. The sign is laminated to protect its graphics from weather damage, graffiti, and wear, so it stays clear and readable. Plus, it uses official 3M reflective film and inks, ensuring high visibility and quality for traffic and parking areas. This sign is a reliable and convenient choice for marking reserved handicap parking spaces.

The SmartSign EV Parking Sign is built with sturdy 63 mil thick aluminum, ensuring it won’t easily bend and can handle harsh weather conditions for up to 10 years. Its rounded, smooth edges make it safe and comfortable to handle while giving a clean, professional look. The sign’s laminated surface protects the graphics from weather damage and abuse, making it easy to clean off graffiti and keeping the sign looking fresh for a long time. Plus, it comes with pre-drilled holes, so you can quickly and easily mount it on various types of posts or fences without hassle.

The SmartSign Employee Parking Sign is designed to clearly mark employee parking areas and deter unauthorized vehicles with its bright red and white colors. Made from durable aluminum composite material, this sign can withstand outdoor conditions for up to seven years, saving you from frequent replacements. Its reflective surface ensures your message is visible even at night, making it easier for drivers to spot and follow parking rules. Installation is hassle-free with pre-drilled holes that fit various types of posts or fences, allowing you to set it up quickly and securely. Additionally, a UV-resistant coating protects the sign from weather damage and graffiti, keeping it looking new longer.

The SmartSign No Parking Sign is built from thick, durable aluminum that resists bending and withstands harsh weather for over a decade, making it a reliable choice for your property. Installing the sign is hassle-free, thanks to pre-drilled holes that fit various types of posts and fences, saving you time and effort. The sign features a protective laminate that guards against weather damage and allows you to clean off graffiti easily, keeping it looking fresh. Plus, high-quality 3M inks ensure the graphics stay clear and vibrant even when exposed to outdoor conditions. This sign offers long-lasting visibility and protection for your private property.

The Mytee Products EZ Mount Safety Flag DOT Compliant pack includes 8 PVC orange mesh flags that measure 18" x 18". The spring-loaded, quick-release warning flag is constructed with stainless steel and comes with an extra replacement flag in the kit. The flags are easy to disconnect and sold with mounting brackets. Ideal for industrial warning signs.

The SmartSign Speed Bumps Sign is designed with official 3M reflective materials, ensuring you meet all DOT standards for outdoor traffic signs. This means your sign will be highly visible, especially at night, thanks to its diamond-grade reflectivity that catches headlights and alerts drivers early. Made from heavy-duty rustproof aluminum, it offers long-lasting durability with a protective laminate that shields against weather damage and graffiti, making maintenance easier for you. Installation is simple with pre-drilled holes and smooth edges, so you can mount it safely and quickly on various types of posts or fences. This sign combines visibility, durability, and ease of use to keep your area safe.

The SmartSign Freezing Warning Sign is built with heavy-duty 80 mil thick aluminum that resists rust and lasts up to 10 years outdoors, giving you long-term reliability. It’s designed for easy setup with pre-drilled holes that fit various post types, so you can install it quickly without hassle. The sign features a clear laminated coating that protects the graphics from weather damage and makes it easy to clean off graffiti or dirt. Plus, it uses official 3M reflective materials and inks, ensuring high visibility and durability in all outdoor conditions, helping you keep your property safe and well-marked.

The SmartSign Stop PPE Sign offers durable and reliable outdoor use thanks to official 3M reflective films and inks on rustproof aluminum. This means you get a sign that meets DOT standards and stays visible even in low light. The rounded corners provide safe handling and a polished look, reducing the chance of injury or damage during installation. Its laminated surface protects the graphics from weather damage and makes it easy to clean off graffiti, keeping the sign looking clear and professional for longer. Plus, pre-drilled mounting holes make setting up this sign quick and simple on various post types or fences, saving you time and effort.

The Anobell Reflective Power Signs are designed to keep you safe by clearly marking overhead power lines in construction and industrial areas. These signs use reflective aluminum, so you can easily see the warning both day and night, helping you avoid accidents. Made with heavy-duty aluminum, they resist weather damage like rain, sun, and rust, ensuring they last a long time outdoors. Installation is hassle-free thanks to pre-drilled holes, making it quick to mount the signs on poles or walls. Plus, the smooth surface is easy to clean, keeping the signs visible with minimal effort.

The Mytee Orange Safety Flags are designed to keep you visible and safe on the road. Each flag is a bright orange color, making it easy to spot from a distance. The flags measure 18 by 18 inches, providing a large, clear warning signal. They come attached to a sturdy 30-inch wooden dowel, which makes them easy to hold or mount on your vehicle. These flags are perfect for alerting other drivers to oversized loads or hazards, helping you stay compliant and safe while on the move.