SOSS 2 3/8" Invisible Hinges

These versatile hidden hinges offer exceptional strength, security and smooth operation. Regular hinges support weight on a single knuckle located outside the jamb, but these hinges place the weight on multiple moving pivot points within the hinge body so they can bear heavy loads. They seat flush in a deep mortise to resist sagging, remaining inconspicuous and tamper-resistant when closed. The interlinked laminated steel plates move smoothly and silently, opening 180°. Easily installed with a drill in wooden doors and frames (see note below).