Deltana Enterprises Radius Single Action Steel Spring Hinge Polished Brass 4 in. x 4 in. x .63 in

Radius Single Action Spring Hinge

This hinge uses a steel spring to close a door automatically after each pass. The polished brass finish resists tarnish and suits traditional or period interiors. It fits standard mortise cutouts on residential or light commercial doors.

4 in. x 4 in. leaf with .63 in. thickness

The leaf dimensions suit most interior door stiles, while the .63 in. thickness provides solid bearing surface for daily cycling. It lacks adjustable tension, so installers cannot fine-tune closing force. Builders needing hold-open or heavy-duty fire-rated hinges should select a different model.