Aluminum sheet features a smooth, baked enamel surface and is sold in a variety of gauges. Aluminum is ideal for long- to permanent-use signs such as traffic, parking lot, park, and reusable real-estate signs. White baked enamel faces come in .080 and .040 thicknesses. Raw aluminum faces may be used if the sign needs to be made reflective by sheeting out with engineer grade reflective vinyl before printing
Max Metal is an aluminum composite material made of two sheets of .012 aluminum with a solid polyethylene plastic core.This material is ideal for mid-to-long term outdoor signs as it is not prone to warping in high heat.