HOMACER aims to provide the best value products and services to save your time and money when you think of installing a sliding door at your home! Pre-install Notice:1. Only the hardware is for sale, cabinet is not included. 2. Two doors kit including one flat mini roller set and one bent mini roller set, three door kit including two flat mini roller sets and one bent mini roller set or one flat mini roller set and two bent mini roller sets , four doors kit including two mini flat roller sets and two bent mini roller sets 3. From the top of the door to the ceiling, you need to have at least 4 Inches clearance for the single track bypass hardware kit.4. All tracks that are 48inches and under, and 60inches come in one piece. All tracks that are 54inches and above are connected by two tracks using a junction plate. The 114inches track is connected by three tracks.