SECURISTYLE Defender Restricted Friction Hinge Top Hung 17mm - 500mm (20 Inch) X 17mm

This Securistyle Defender top hung window friction hinge has a built in restrictor and a stack height of 17mm. The window restrictor incorporates a child resistant mechanism which limits the initial opening of the window in question. The built in quick release lever allows the window to be fully opened to be easily cleaned.