The ornamental design for a sprinklerhead, substantially as shown and described.
FIG. 1 is a perspective view of a sprinkler nozzle embodying the new
design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof; and
FIG. 4 is a side elevational view thereof, the other sides being the same
side as the side shown.
The fragmentary broken-line showing of a water supply riser pipe in FIG. 1
is for purposes of illustration only and forms no part of the claimed
design.