The ornamental design for a door for washingmachine, as shown and described.
1. Door for washing machine
1.1 is a perspective view of a door for washing machine, showing our new design;
1.2 is a front elevation view thereof;
1.3 is a rear elevation view thereof;
1.4 is a left-side elevation view thereof;
1.5 is a right-side elevation view thereof;
1.6 is a top plan view thereof; and
1.7 is a bottom plan view thereof.
The broken line showing in figures 1.3-1.7 is for the purpose of illustrating portions of the door for washing machine and forms no part of the claimed design.