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STANLEY 2060R 4X4 26D STL Spring Door Hinge, Satin Chrome, Steel, 4" Height
Architectural - grade spring door hinge designed for use in commercial applications Template screw hole o for use either wood or hollow metal doors and frames Ul listed, for use on fire rated doors Is an alternative to overhead door closers
https://www.bizrate.co.uk/homehardware/stanley-2060r-4x4-26d-stl-oid18817133442.html