You should be able to use any pre-hung door for what you want as long as the width of the jamb is the same as your studs plus the drywall on each side. Since you will not be using typical door trim, make sure you mount your doorjambs very securely. Typically the door trim adds strength to the doorjamb, but you will have to rely entirely on the nails and shims used to mount it.

Trim-tex makes some inexpensive trim details. We just built a house and used their #5508 trim to give a ½” shadow line around the doors. This stuff is plastic and easy to work with. You should probably use some foam or something to fill the gap between the doorjamb and the stud since this type of trim will allow you to see a sliver of light in some places where it meets the jamb(typical trim spans the doorjamb and the wall and prevents this). Also, this type of trim is a pain to paint/finish unless you paint the shadow area and part of the doorjamb the same color.

John

Thanks so much John. Would you happen to have any pictures that you can post? I'd love to see how it turned out.

best,

di

Here are a couple of pictures. The door has not yet been finished, it needs to be sanded and varnished. It is kind of hard to see in the pictures, but the edge of the doorjamb is flush with the drywall. The trim creates a ½” x ½” shadow line around the doorjamb.

 

John