Recommended by police and insurance companies. VdS and DIN certified: Secure doors and windows retroactively with this hinge side security. Your apartment and front door, as well as windows and patio doors, are popular entry points for criminals. Therefore, police and insurance companies recommend retrofitting with a hinge side security that has VdS and DIN certification. This security meets the criteria set by experts. With a pressure resistance of one ton, it reliably protects against prying. Specially pivot-mounted bolts automatically engage and only rotate when the door is opened. The security can also be used with windows and patio doors that have a hinged leaf without a tilt function. A drilling template makes installation easier.