Stanley Hardware S420-014 2060R Spring Hinge in Bright Brass Authorized Replacement from National Hardware Stock #N236-154 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 Ideal for use in corridors, entrances and stairways Alternative to overhead mounted door closers; automatically closes door Ratchet design allows for quick fine tuning tension Includes Allen hex key Lifetime warranty against defects in material and workmanship