I've decided it would be a good thing to replace the crummy slab hollow core
interior doors in this house with something a little nicer, perhaps solid or
engineered maple raised panel doors.

Unfortunately for me, a lot of stuff in this home is non-standard. (For
example, the 2 1/2" backset on the interior doors). I seem to have a mix of
28 and 30" doors, which really are 27 3/4 and 29 3/4. Question: is that
standard or is it yet another oddity of this home?

The conventional wisdom is that the rough opening should be about 2" wider and
2 1/2" taller than the door. I pulled the casing on one of the smaller doors,
hoping for a 29 3/4 opening, and (naturally) found it to be about 29 7/16"
wide. I didn't measure the height.

I emaled a couple of internet vendors, and was told, eassentially, that I
would need pretty close to 30" width for the 28" door. There was no way
they'd fit in my opening.

I'm naively making the assumption that this reality is forcing me into
big-bucks custom sizing. But it doesn't hurt to ask any pros in the newsgroup
if there's some stock-size solution that might not be apparent to me as Joe
Homeowner.

Thanks for any advice.

Art