https://www.repairmywindowsand....doors.co.uk/richmond
Window Friction Hinges A friction hinge is equipped with a mechanism inside that creates resistance to movement. This kind of hinge is used to secure panels, flaps and windows in place. It can also prevent springback and the slamming. These Yale Defender egress easy clean friction stay hinges allow for full opening of windows to meet Building Regulations approved document B1. These Yale Defender egress clean friction stay hinges permit full opening of windows to meet Building Regulations approved document B1
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