The ornamental design for sanitary panel column, as shown and described herein.
FIG. 1 is a front and top perspective view of a sanitary panel column showing our new design in condition of use with a toilet bowl and having panels of contrasting colors as denoted by the dark shading employed thereon;
FIG. 2 is a front and top perspective view thereof taken from the left side angle showing the panels in an exploded position for clarity of illustration; and,
FIG. 3 is a front and top perspective view thereof, shown separately for clarity of illustration.
The broken lines showing of a toilet bowl and wall/floor corner lines is for illustrative purposes only and form no part of the claimed design.