I believe there are hidden door kits you can order off the internet... some of which can be ordered with a bookshelf or just the hardware for someone else local to build the bookshelf and mount with. This door on this project was actually custom milled and built using heavy ball bearings hinges and a roller wheel at the far corner of the door. You can't see in this picture, but the door jambs are actually scalloped to the radius of the door swing to accommodate the thickness of the door. Hope that helps you, thanks for the question.