Application 1. Determine the thickness of the door leaf. 4-inch door leaves are suitable for 14-22 mm. 2. Note that the hinges can be closed at the same time (reverse) 3. Positioning Without cover: Edge = 4 mm + thickness of the side leaf. Half cover: Edge = 4 mm + 1/2 thickness of the side leaf. Full cover: Edge = 4 mm. 4. When installing, mark the holes and screw the screws into them. Be careful not to screw them in to avoid errors when adjusting the position later. 5. Position the hinge and screw in the screws. Then align the hinge straight and position the side panel.