Doors and windows hardware 9 Series, 13 Department is what
9 and 13 refers to the activities of the doors and windows of the space, that is, doors and windows in the closed state, from the fan only the middle of the metal slot to the outer surface of the box outside the vertical distance. The difference between 9 and 13 generally reflects the size of the doors and windows to select the lock block and the specifications of the hinges.
Doors and windows hardware 9 series, 13 refers to the doors and windows of the hardware space.
