The ornamental design for a spindle for fenestrationunit handle, as shown and described.
FIG. 1 is a right front perspective view of a spindle for fenestration unit handle in accordance with the claimed design;
FIG. 2 is a top plan view of the design of FIG. 1;
FIG. 3 is a bottom plan view of the design of FIG. 1;
FIG. 4 is rear elevation view of the design of FIG. 1;
FIG. 5 is a front elevation view of the design of FIG. 1;
FIG. 6 is a right side elevation view of the design of FIG. 1; and,
FIG. 7 is a left side elevation view of the design of FIG. 1.
The dash-dash broken lines in the figures represent unclaimed subject matter and form no part of the claimed design.
The labels used herein to describe orientation (e.g., top, bottom, left, right) are merely for reference and are not intended to limit the interpretation of the design.