https://yamcode.com/15-secretl....y-funny-people-in-do
Security Features of Double Glazed Windows Modern double-glazed frames are equipped with additional security features that make it more difficult for burglars to break into them. They include sturdy locking mechanisms as well as high-quality handles. Espag handles feature spindles on their back that triggers a multi-point lock that is attached to the window frame. They are common on modern uPVC windows and are available in straight or cranked versions. High-Tech Locking Mechanisms Window locks are a crucial comp