All of our warning series traffic signs are manufactured to both federal and/or state specifications. We use premium grade alodine treated 0.063, 0.080, or 0.125 gauge aluminum. Our warning series traffic signs can be fabricated using 3M  Engineering Grade Prismatic (3040) Series, High-Intensity Prismatic (3930) Series, Diamond Grade (4090) Series, and Florescent Diamond Grade (4080) Series Sheeting. We have available both encapsulated and prismatic sheeting.