40917 is a type of Dymo label tape. It is a 3/4-inch white tape that is designed for indoor and outdoor use. It can be used for labeling anything from file folders to shelving and bins. The tape is made from a durable, fade-resistant material that is designed to resist water, heat, and UV light. Its adhesive backing ensures that the label will stay in place even in harsh conditions. It is also compatible with all Dymo label makers.