Diamond Grade (Type XI) is the highest level of reflectivity available, returning about 60% of available light back to the driver—double that of lower-grade films. This ensures that caution traffic signs remain visible even at extreme angles and in the most challenging weather conditions.
It is essential for signs located in high-speed areas, intersections with lots of ambient light, or where visibility is blocked by obstacles.
Yes, 3M Diamond Grade sheeting is exceptionally durable and is designed to maintain its high reflectivity for 12 years or more. This long-life performance is why it is the standard for custom highway signs, where the cost of replacement and labor makes "once-a-decade" durability a financial necessity.
Yes, our custom tool allows you to select Diamond Grade for nearly any sign design, from "Stop" to "Yield" and "Caution."
In many jurisdictions, Diamond Grade is required for overhead signs and critical regulatory signs like "Stop" to meet current DOT standards.
For maximum visibility and safety, choose our Custom Diamond Grade Reflective Aluminum Signs.Designed for high-traffic areas, public roads, parking lots, and municipal applications, these signs provide exceptional retroreflectivity, ensuring they can be seen clearly from long distances, day or night. Available in a range of sizes, shapes, and custom messages, our diamond grade reflective signs are ideal for private roads, commercial sites, schools, municipalities, and industrial areas. Pre-drilled holes and rounded corners ensure easy, hassle-free installation with a professional finish.
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