Ever wonder why door hardware is so complicated?
Two Reasons: [1] Doors are a moving part, and [2] people use that moving part.
Sounds obvious at first until you think about the fact that moving parts in a building are limited to doors and windows, and people don’t pass through windows but they do pass through doors.
Considerations include: Security requirements, fire-ratings, handicapped users, exterior doors vs interior doors, and sound barriers. People have many different types of requirements and doors have to adapt to those requirements.
![Exterior Doors Have Many Requirements](https://usbuildersupply.com/wp-content/uploads/2024/03/About-Doors1.png)
Quick Tips
Fire rated doors require fire rated hardware.
The top hinge on a door receives the most stress.
A standard commercial door is 1-3/4” thick and uses a lock with a 2-3/4” backset.