The ornamental design for a floor engaging surface structure for a furniture cap or glide, as shown and described.
FIG. 1 is a bottom perspective view of the floor engaging surface structure for furniture cap or glide according to the present invention.
FIG. 2 is a bottom plan view.
FIG. 3 is a front side view of the design, the rear, left and right side being identical thereto; and,
FIG. 4 is a bottom perspective view showing the floor engaging surface structure for furniture cap or glide according to the present invention.
The surfaces or portions of the article shown in dashed lines in the drawings are provided for clarity and to show environmental or structural elements that do not form a part of the present design. The surface(s) or portion(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design.