Engineered Aluminum Composite (EAC) is comprised of two thin sheets of aluminum, thermo-bonded to a polyethylene core. The result is a material that is more rigid than solid aluminum while weighing almost 50% less. The reduced weight and increased rigidness make this material perfect for larger facility signs or river crossing signs. While solid aluminum signs tend to warp over time, EAC signs are exceptionally flat and will not bow when exposed to the elements. EAC signs are coated with a UV stable, nylon base paint and printed using UV stable inks before they are laminated for extended outdoor exposure.