The ornamental design for an annularmagnethousing, as shown and described.
FIG. 1 is a top perspective view of an annular magnet housing in an environment in which it may be used;
FIG. 2 is a top perspective view thereof;
FIG. 3 is a bottom perspective view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a front view thereof, the left side, right side and rear being mirror images thereof; and,
FIG. 6 is a bottom view thereof.
The broken lines depicting a sequestration device having a fluid reservoir connected thereto in FIG. 1 represent environmental structures form no part of the claimed design.
The remaining broken lines depict portions of the annular magnet housing that form no part of the claimed design.