The hand of a door is always determined by facing the door from the outside when the door is closed. If the lock is going to be fitted to the right side of the door, the door is Right-Handed (RH). If the lock is going to be fitted to the left side of the door, the door is Left-Handed (LH). To order a handed product, specify LH or RH. Not all products are handed; only specify handing when required.