If you do not use this sign, visitors to the building may be confused and may take completely different directions. The sign would glow if there is a lack of lighting and this is especially helpful in times of emergency. Many emergency lights have either the wrong style of legend or have none at all so these adhesive vinyl signs stick over the light to create an illuminated exit sign. The legends come in packs of 10 and are made by Jalite. Fixing requires nothing as this is self-adhesive.