The ornamental design of the device for carrying extension ladder, as shown and described.
FIG. 1 is a perspective view illustrating the device for carrying extension ladder of my new design.
FIG. 2 is a top view of the device for carrying extension ladder.
FIG. 3 is a left side elevational view of the device for carrying extension ladder.
FIG. 4 is a right side elevational view of the device for carrying extension ladder.
FIG. 5 is a bottom view of the device for carrying extension ladder.
FIG. 6 is a front elevational view of the device for carrying extension ladder; and,
FIG. 7 is a rear elevational view of the device for carrying extension ladder.
The broken lines shown in the figures are included for the purpose of illustrating portions of the device for carrying extension ladder and form no part of the claimed design.