How is the hand of a door determined?

• A. By the knob position
• B. By the hinge location when viewed from inside
• C. By the frame style
• D. By the door thickness

Answer: (B)

Hand of a door is determined by the hinge side when you stand on the inside looking at the door. If the hinges are on your left, the door is left-handed; if they're on your right, it's right-handed. This method stays consistent because hinges define how the door will swing, while knob position, frame style, or door thickness don’t indicate the direction of swing.