The ornamental design for a frontpanel for drum washing machine, as shown and described.
FIG. 1 is a front, right perspective of the front panel for drum washing machine showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing in FIGS. 3, 6 and 7 is included for the purpose of showing environmental portions of the washing machine and forms no part of the claimed design.