Designed to fit inward and outward opening doors and windows. Sash Jammers have a short arm that can be turned to trap a sash against a frame to prevent the door or window from being opened. Just a simple turn of the Jammer Arm will lock or release the sash. Great product for additional security with hassle free, quick operation.
In addition to acting as secondary security locks, they are effective as a means of securing windows with faulty handles and are a popular solution for uPVC conservatories, windows and doors.
Yale 8K103 white
Easy to fit, easy to use secondary security for under £12 !