Stanley Hardware S420-015 2060R Spring Hinge in Satin Chrome Authorized Replacement from National Hardware Stock #N236-012 Patented ratchet adjustment eliminates need for adjustment locking pin Conforms to ANSI/BHMA standard A156.17 Meets NFPA8 standard for 3 hour fire rated doors - minimum 2 spring hinges per door required Automatically closes door - an alternative to overhead mounted door closers