Last week we featured some ADA signs we made for XRM Studios. Along with interior code signs, we also worked on their exterior signs which included two sets of channel letter signs. The first sign was the storefront sign for the entrance. This is a compound channel letter sign which means that the lighting comes out the back, as well as the front. Channel letters that have lights coming out the front are called front-lit channel letters, and channel letters that have lighting coming out of the back are called reverse-lit channel letters.