FIG. 1 is a perspective view of our new design for a transfer bench seat back.

FIG. 2 is a top plan view.

FIG. 3 is a bottom plan view.

FIG. 4 is a right side elevation view.

FIG. 5 is a rear elevation view.

FIG. 6 is a left side elevation view; and,

FIG. 7 is a front elevation view.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design.