We claim the ornamental design for the stepped spiral chute assembly having friction reduction panels, as shown.
FIG. 1 is a top perspective view of a stepped spiral chute assembly having friction reduction panels showing our new design;
FIG. 2 is a front side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown in the figures are for the purpose of illustrating portions of the stepped spiral chute assembly having friction reduction panels and form no part of the claimed design.