1. Medicine Cabinet: Look specifically for cabinets labeled "recessed," though a surface-mount cabinet can be converted into a recessed one, as long as its sides can slip into the wall cavity without obstruction.

2. 2x4 Lumber: For the blocking, which makes the frame to which you'll fasten the cabinet. Use scraps if you have them, or one 8- to 10-foot piece should be enough.

3. Construction Adhesive: To help attach the blocking.

4. 21/2-inch Decking Screws: To fasten th blocking to the studs.

5. 11/2-inch Drywall Screws: To hold the cut drywall edges to the blocking and to mount the cabinet.

6. Caulk (as needed): To fill gaps between the cabinet frame and the wall.