Posted by National Lock Supply on Dec 17th 2025
Door handing determines hardware orientation, which side hinges mount on, which direction doors swing, and which face is interior versus exterior. Incorrect handing specifications result in locksets that install backwards with keying on the wrong side, closers mounted on improper door faces creating interference, panic bars that open in the wrong direction violating egress codes, and hinges delivered for the opposite side requiring returns and re… Read more
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