What better way of demonstrating how far 175 plastic letters tiles per pack will go. Here’s a picture of a recent customer showing off what you can do with a standard pack of american style cinema sign letters. Think you get the picture. If you are considering buying sets of our sliding letters, the golden rule is the smaller the letter you choose, the more plastic letter tiles you will need. Remember LPM stands for letters per metre, so LPM 08 is our largest sliding plastic letter and you will get eight plastic letter tiles per 1 metre of tracking.