The door was extremely easy to put together. However, the track not so much. When you intend on hanging on drywall (instead of concrete), the door is designed to not go into studs, but large molly bolts. The is not well designed since the door is extremely solid and weighs too much to not be in studs. 

Another issue were the bolts for the rollers. If door is going over a trimmed door, the bolts will hit the door trim. The work around was adding a 1x3" oak board behind the tracks. The oak board can be mounted to the studs and the the track can be mounted to the oak board. The will secure the door much better than the original design.  

Lastly, the white plastic trim was not included in the box. The trim are covers for the holes for the door bolts.