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Commercial Full-Mortise Hinge (Grade 1)
Grade 1 commercial full-mortise door hinge per BHMA A156.1. 4.5×4.5" or 5×5" 5-knuckle 4-ball-bearing construction in steel, brass, or 304/316 stainless. 2.5M cycle rated; NFPA 80 listed for fire-rated assemblies.
Also known as
commercial hinge · full mortise hinge · ball bearing hinge · fire-rated hinge
Key Features
- Grade 1 (2.5M cycles) for high-traffic commercial duty
- Ball bearings reduce friction and squeal
- 316 SS option for coastal installations
- Fire-rated assembly compatible per NFPA 80
Available Materials
Specifications
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