What does door handing (left-hand or right-hand) mean, and how do I specify it?

Stand on the side the door swings toward, facing the opening. If the hinges are on your left it is a left-hand door; on your right, a right-hand door. Getting handing wrong is the most common ordering mistake and it usually cannot be fixed on site. We mark handing on every drawing and every carton, and we confirm it with you again before production.