this was a rush job, we knocked it out in a couple weeks while still doing all our other jobs. its reverse pan channel letters made from 22 guage steel mounted to a 2' tall by 20' long aluminum raceway. the letters are internally illuminated by 6500 white neon (I subbed that to a local glassblower named steve cimino and its the only part of this that we didnt do in house) they have clear lexan faces and allthread studs holding them 2" from the raceway for the back glow.