Among the most affordable LED-illuminated signs on the market. Aluminum-construction means the cabinet will last decades in even harsh environments. Most commonly box-shaped, such as square or rectangle, though these can take on various shapes. Interchangeable acrylic or polycarbonate faces make light box signs a great long-term solution for inexpensive graphics changes. Commonly used for pylon signs and plaza / strip-mall building signage with high tenant turnover.