This particular door was a Masonite door purchased at Home Depot. The paint color is wet pavement. You can see info on the door at the following link:

http://www.homedepot.com/p/Masonite-36-in-x-80-in-Riverside-Smooth-5-Panel-Equal-Hollow-Core-Primed-Composite-Interior-Door-Slab-10751/202505854?MERCH=REC--PIPHorizontal1_rr--202505852--202505854--N

Since this is a Wall-Mount/Barn Door application, you just need a slab door and not a prehung door.

For questions or help with installation you can contact our office, we are located in Los Angeles. 1.877.642.7772