KNITEX KTX-2859 ROPE SAFETY LOCK USING INSTRUCTIONS 1. It is a unique safety lock that provides safe ventilation for all types of doors and windows. 2. It provides ventilation by preventing the full opening of the window on which it is applied, while preventing falling cases and ensuring child safety. 3. Complete security as it can only be opened with the key. 4. It can be easily applied to all types of windows and doors, including PVC aluminum, wood and metal. NOTE: - let's protect our home and children - 300 kg force resistant - easy installation practical solution