National Hardware N236-154 2060R Spring Hinge, 4-1/2", Bright BrassHighlights: Ideal for use in corridors, entrances and stairways Automatically closes door an alternative to overhead mounted door closers Patented ratchet adjustment eliminates need for adjustment locking pin Meets NFPA8 standard for 3 hour fire rated doors minimum 2 spring hinges per door required UL listed for doors up to 4' x 8' weighing up to 180 lbs.