The ornamental design for a barncurtain, as shown and described.
FIG. 1 is a front and left side perspective view of a barn curtain, showing the new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof.
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The dashed lines in FIGS. 1-6 represent environment for illustrative purposes and do not constitute part of the claimed design.
The phantom lines (i.e. dot-dot-dash) in FIGS. 1-6 represent the boundary between claimed matter and environment.
The centerline style lines (i.e. dot-dash) shown in FIG. 1 represent additional environment such as the side, eve and roof of a building for illustrative purposes and do not constitute part of the claimed design.