Installing a pre-hung door is much simpler than purchasing the raw materials and building a door from scratch. Pre-hung doors come already fastened to the door frame, and you can order them to size. Pre-hung doors also eliminate the time-consuming process of routing a space for the door hinge and doorknob hardware (like the faceplates), and the holes are already cut for the latch and doorknob. With a pre-hung door, you can install a typical interior door in about 15 minutes, and this article…