Insure maximum visibility of critical safety messages with 3-sided safety signs. Made in the USA from recycled plastic. Standard signs are 7.5"H x 20"W and project 5". Slim signs are 12"H x 9"W and project 3". Pre-drilled for easy installation and includes adhesive mounting tabs. 10+ hour glow-in-the-dark versions exceed ASTM E 2072-00 standards.