storage cabinets with doors for special purposes. While most of us know of brass or aluminum hinges and rarely pay any attention until the door squeaks or doesn't keep shut or open, as you desire. However, we may need to know more about commercial door hinges that serve special purposes.
The Unseen Hinge:
Factories and business establishments will have a number of people opening and closing the door all the time. This is an important point for selecting commercial door hinges. Heavy-duty aluminum geared continuous hinges can withstand as many as 25 million cycles; just a thumb rule calculation says this is something 60 years of heavy traffic.
If your building needs fire rating, opt for the pre fire-rated commercial door hinges; this will save the bother of obtaining a separate rating later.
Electrified commercial door hinges are another type of specialty hinges meant for electrically locking or opening doors. Such doors are worked by concealed devises that transfer low voltage current to the doors. Purpose built hinges route the current transfer to electrified mortise or cylindrical locks and other exit devices; and facilitates electric latch retraction, and locking.
Prices do differ based on the type and the purpose, but to give a general idea, an 8-wire 5x5" electrified hinge will cost around $145, while a 4-Wire 5x5" costs around $110. These are prices offered by online stores, but local stores may charge a little higher.