The ornamental design for a wire formed “I” beam hanger, as shown.
FIG. 1 is a front elevation view.
FIG. 2 is a front elevation view in an alternative position.
FIG. 3 is a front partial cutting section view in another alternative position.
FIG. 4 is a top elevation view coming from FIG. 3; and,
FIG. 5 is a bottom elevation view coming from FIG. 3.
The wire formed “I” beam hanger is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines in the drawing depict environmental subject matter only and form no part of the claimed design.