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The ornamental design for a crawlspace door fan, as shown.
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FIG. 1 is a front right isometric view of a crawlspace door fan showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is an enlarged right side view thereof;
FIG. 6 is an enlarged left side view thereof; and,
FIG. 7 is a back view.
Jackson, James S., Sykes, William G.
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