Ask This Old House general contractor Tom Silva is in Salem, MA, to help install a bookshelf that doubles as a door. (See below for a shopping list, tools, and steps.) SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Shopping List for How to Install a Hidden Door/Bookshelf: - Scrap piece of 1x4 poplar wood [https://amzn.to/2Fpkded] - Murphy door [https://amzn.to/2Xs1B7s] from kit - Shims [https://amzn.to/2J3KIqD] - Finishing nails [https://amzn.to/2IWY8EK] Tools for How to Install a Hidden Door/Bookshelf: - Hammer [https://amzn.to/2Fp3xU6] - Nailset [https://amzn.to/2Fp0NWX] - Pry bar [https://amzn.to/2WZul84] - Levels: 1or 2-foot and 6-foot [https://amzn.to/2Rv9Zhd] - Scribes [https://amzn.to/2Rtv63g] - Circular saw [https://amzn.to/2WRVh4Y] - Wood glue [https://amzn.to/2Y4uR1g] - Drill/driver [https://amzn.to/2JcVevV] - Utility knife [https://amzn.to/2XpBMVx] Steps for How to Install a Hidden Door/Bookshelf: 1. Remove current door from its hinges by popping up the pins with a hammer and nailset. 2. Remove the old jamb and casing with a pry bar. 3. To level the jamb, place a piece of poplar on the floor and make it level. Set your scribes the overall width of the filler and drag the scribes along the piece of poplar. 4. After marking the poplar, cut it with the circular saw, following the scribe line you traced. 5. Using wood glue, glue the poplar filler piece to the underside of the doorjamb to fill the gap. 6. Repeat the same steps to fill the back side of the jamb. 7. Move the jamb from the door kit into place. Using a 6-foot level, check that it’s plumb; if it needs adjusting, place shims between the jamb and the wall studs until the jamb is plumb. Drill through the jamb and shims, and secure with screws. 8. Using a utility knife and a hammer, remove the excess shims on either side. 9. Lift up the bookshelf and place in the pre-fashioned pivot-point pinholes on the top and bottom of the jamb. 10. Glue trim to the jamb and secure with finishing nails. About Ask This Old House TV: Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook. Follow This Old House and Ask This Old House: Facebook: http://bit.ly/ThisOldHouseFB Twitter: http://bit.ly/ThisOldHouseTwitter http://bit.ly/AskTOHTwitter Pinterest: http://bit.ly/ThisOldHousePinterest Instagram: http://bit.ly/ThisOldHouseIG http://bit.ly/AskTOHIG Tumblr: http://bit.ly/ThisOldHouseTumblr For more on This Old House and Ask This Old House, visit us at: http://bit.ly/ThisOldHouseWebsite How to Install a Hidden Door/Bookshelf | Ask This Old House https://www.youtube.com/user/thisoldhouse/