Stanley Hardware S821-710 RP2060R Spring Hinges in Bright Brass, 3 pack 3 pack 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 Automatically closes door - an alternative to overhead mounted door closers Patented ratchet adjustment eliminates need for adjustment locking pin Conforms to ANSI/BHMA standard A156. 17