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Window Friction Hinges A friction hinge is a device built inside that creates resistance to movement. This kind of hinge is used to secure windows, flaps and panels in place. It can also prevent springback and slamming. These Yale Defender egress friction stay hinges are easy to clean and permit full opening of windows in conformity with Building Regulations document B1. They are suitable for both top and side hung windows. Types There are many different types of hinges for windows. The hinge you choose wi