National Hardware 4 in. Brass Spring Hinge

The National Hardware 4 in. Brass Spring Hinge is designed for automatic door closing in residential and commercial applications. Manufactured from durable cold-rolled steel with a brass finish, this spring hinge provides reliable tension and smooth operation for interior and exterior doors, including fire door applications. Featuring adjustable spring tension and closing speed, this hinge allows customized control over door closing force. It includes standard mounting holes and rounded corners for easy installation into existing door cutouts.