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Does Your Business Hinge on Profit? An Overview of Butt Hinges
Commercial/Residential Hardware
Decorative Hinge.
Ives 4-inch residential hinge.
ELECTRIFIED HINGE NOTE
In many commercial applications a fire rated door has been prepared for electrical locking hardware. Sometimes the locksmith does this; sometimes a 'labeled' factory prepares it. Many hinges used for passing power are not fire rated. If these power transfer hinges are rated "BP" (Burglary Protection) UL634 they are rated for connectors and switches as this rating does not contain any fire resistance requirements applicable to fire doors. You can find a listing of UL fire rated power transfer hinges in the UL Fire Resistance Directory.
