Installing a pre-hung door

Question:  I have taken out a garage door and want to build in the wall and put in a \'people\' door and a window. The wall, however, is six inches thick. How can I put in a prehung door and make it work in this wall? I need help quick as the garage door is already out and gone! Sharon

Jake's Answer:  Most pre-hung doors come with a 4 9/16" thick jamb, which is set up for a standard 2 x 4 wall with 1 /2" drywall on each side.  When  you use 2 x 6's for your wall, you should set the standard door towards the exterior side of the wall and extend the depth of the jambs so the interior side of the jamb will be flush with the drywall.  These jambs are extended to the interior at the trim stage of the project.