DIYHD 6ft Top Mount Bypass Double Sliding Barn Door Hardware Kit For Low Ceiling hardware only,not including door panel package's incluiding:roller*4,stopper*4,track*2,track&wall connector*10,bypass connector*5,anti-pad*4,floor guide*2 The length from top of the door to the top of the bypass bracket is 5.7";the gap between two doors are about 1-1/4" based on door thickness 1-3/5" suitable for door thickness:40-45mm,two rollers can hold MAX weight 90kgs Here's the video for installation:https://www.amazon.com/stores/page/C3B4D820-44ED-4354-8AE6-4B1A5E9E554F?ingress=2&visitId=2e793d24-7b36-4b8e-9570-eb76497c695f