I need to replace an exterior front door -- just the door slab, and not the
frame. The actual size of the existing door itself (not the opening, which
is a little larger) is 31 5/8 inches X 78 3/4 inches X 1 3/4 inches.


I assume that I will need to buy a 32x80 exterior door and trim it a little
to fit.


My question is, does that mean that I have no real choice other than to buy
a wood door because only a wood door can be trimmed?


Or, is there a way to trim exterior metal doors to fit the opening?