The ornamental design for a disposable handtowelboxsupport, as shown and described.
FIG. 1 shows a perspective view of the disposable hand towel box support with its front door in an open configuration, whereby a disposable hand towel box may be positioned within the interior thereof.
FIG. 2 shows a rear perspective view of the disposable hand towel box support along its fastenable side.
FIG. 3 shows an overhead view of the disposable hand towel box support of the present invention.
FIG. 4 shows an underside view of the disposable hand towel box support along its suction cup side.
FIG. 5 shows a front view of the disposable hand towel box support of the present invention.
FIG. 6 shows a rear view of the disposable hand towel box support of the present invention; and,
FIG. 7 shows a side view of the disposable hand towel box support of the present invention with its front door in a closed configuration.
The broken lines in the disclosure represent environment for illustrative purposes only and forming no part of the claimed design.