Channel letters are the standout sign features everyone recognizes, but few know them by their proper name. You’ve surely noticed the neon or LED lights of your favorite tavern or diner. The telltale curled letters, often in cursive, and beloved bright glow are beacons when hunger strikes late at night or you’re in the mood for a classic diner experience with malts and fries cut by hand. Channel letters are standard 3-D graphic features often made of aluminum. This type of metal won’t rust, which is why the letters and their complementary sheet metal backing can last for decades with proper care.