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The ornamental design for a collapsible scaffolding extension, as shown and described. |
FIG. 1 is a perspective view of a collapsible scaffolding extension attached to a collapsible scaffolding showing my new design the broken lines showing the collapsible scaffolding are for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a front elevational view of the collapsible scaffolding extension;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a rear elevational view thereof.
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