https://www.repairmywindowsand....doors.co.uk/sutton-c
Window Friction Hinges A friction hinge has a mechanism built inside that creates resistance to movement. This kind of hinge can help hold lids, doors, flaps, panels, and windows in position. It also stops springback and the slamming. These Yale Defender egress friction stay hinges are easy to clean and allow windows to fully open in accordance with Building Regulations document B1. These Yale Defender egress simple clean friction stay hinges permit full opening of windows to meet Building Regulation
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