A gothic door is heavy, often arched, usually solid timber, and hung where the look matters. The wrong hinge undoes it fast: the leaf sags off the arch, the black finish rusts and weeps down the timber, or a boxy...
You already know a carriage door is not a standard 3'0 x 7'0 passage leaf. It is wider, heavier, usually swings on an exterior wall, and it carries a look the owner paid a premium for. So the hinge decision...
A prehung door shows up with its hinges already set, and that setting rarely matches the leaf weight, swing, or code line your opening actually has. When it's off, the door slams or hangs shy of the strike, and fixed...
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