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Window Friction Hinges A friction hinge has a mechanism built into it that creates resistance to movement. This type of hinge is used to keep windows, flaps and panels in the right position. It also stops springback and slamming. These Yale Defender egress easy clean friction stay hinges allow for full opening of windows in order to meet Building Regulations approved document B1. They are suitable for side-hung and top hanging windows. Types There are a variety of window hinges. The kind you select will depe