Features: Ensure the safety of your sliding door and window with the type 30 track stopper, designed to prevent accidental derailment and extend the lifespan of your installations. Crafted from high strength aluminum alloy, this corrosion resistant stopper is easy to install and for various track designs, ensuring long lasting durability. For homeowners, property managers, and construction professionals looking to enhances door and window security. Perfect for use in residential homes, office buildings, and retail spaces, providing stable limiting protection for sliding door and window. Enhances your space's safety and functionality with this reliable sliding door accessory, a must have component for any modern architecture project. Specifications: Component:Aluminium Alloy Size:As Picture Shown Package Includes: 1pcs Sliding Slot Restrictor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.