FIG. 1 is a top, front, and left side perspective view of a folded sheet adapter showing our new design, the undisclosed right side being a mirror image of the left, and the broken-line disclosure of the dispensing opening being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof; and,

FIG. 3 is a bottom plan view thereof.