A frame extender for attachment to a stud is formed as an L-shaped body
having two orthogonal legs, a short leg and a long leg. The short leg
serves as a mounting surface to which a wall surfacing material can be
attached, while the long leg is fastened to the stud. The long leg
terminates in an outer edge which preferably has a toothed profile. An
indexing mark is provided on the long leg, extending parallel to the
short leg and spaced apart therefrom, and substantially traversing the
long leg. The indexing mark is preferably provided by a discontinuity in
the surface of the long leg that is placed against the stud. A preferred
method for fabricating the frame extenders uses stock that can be pressed
or extruded, and which is cut along a serpentine path to form a pair of
frame extenders.