American Lighting Systems Evolution Series LED Full Cut wall packs are "purpose-Built". Unlike traditional wall packs that required a large, bulky housing to hold a bulb and reflector, these wall packs are designed from the start to compliment the performance of LED technology. The full-cutoff display is Dark-Sky complaint and uses a UV-resistant type III lens to project all of the light to the surface. Typically used on the side of buildings to illuminate walkways, driveways and parking lots. All of our Evolution Series wall packs have a cast aluminum housing that is treated with a chromate coating to deter corrosion, and finished with powder coat to provide a durable paint covering. All of our Evolution Series wall packs feature Philips Lumileds LED chips and come with a 5 year warranty.