The BST-323/12 is a marking strip designed for mounting on terminal strips to provide clear circuit identification. Constructed from white, matte-finish rigid PVC, it has an overall length of 138.0 mm and a width of 28 mm. The strip is 0.6 mm thick and can withstand temperatures up to approximately 80°C (176°F). It is designed to be mounted either beneath or above the terminal strip and is held in place by the same fasteners that secure the terminal strip. This provides a durable and easy-to-read labeling solution for wiring in panels and chassis.