The ornamental design for a fanblade, as shown and described.
FIG. 1 is a perspective view from below of a fan blade in accordance with my design;
FIG. 2 is a top plan view of the fan blade in accordance with my design;
FIG. 3 is a side elevation view of the fan blade in accordance with my design; and,
FIG. 4 is a bottom plan view of the fan blade in accordance with my design.
The broken lines showing environmental structure are for illustrative purposes and form no part of the claimed design.
The broken line showing of the support rod, blades, component and light fixture is included for the purpose of illustrating environmental structure and forms no part of the claimed design.