The National Fire Protection Association (NFPA) publication number 80, Standard for Fire Doors and Windows establishes the hardware requirements for fire-rated openings with builders'hardware. All hardware installed on fire-rated openings must be listed for use on fire-rated openings.Hinges or pivot

DATA SHEETSANSI/BHMA A156.1:2016AMERICAN NATIONAL STANDARD FORBUTTS AND HINGES Model: DDSS001- 4.5x4.5x4.6mm-4BBGrade: 1Hinge height: 4.5 InchesDoor Weight: 150 lbs