A storefront sign typically consists of four components: an OPEN sign, a NEON sign, and a FORRENT sign. The OPEN sign is usually four letters long and indicates that the business is OPEN for business. The NEON sign is also four letters long and is used to attract attention to the storefront. The FORRENT sign is seven letters long and is used to indicate that the storefront is available for rent. Together, these three components make up a storefont sign.