1.The flat door knob is use for Door Thinckness:1.14-1.77 Inch (29mm- 45mm) and 2.2 Inch (55mm).
2.There are two long chicago Screws in the pakage.It can screws to the other side of the door knob.You should cut the long chicago screws according to the thickness of the door.
3.The door latch lock can be works for passager door, furniture door, Kitchen door, Bedroom door, Closet door, Bathroom door, Passage door and so on.
4.Material: 304 Stainless Steel, copper, zinc alloy and plastic. Finished: Black and Chrome.
5.If you have any not satisfied with the pocket door locks, please .we will help your issue.