The ornamental design for inside surface of a filterelementhavingspacerconstruction, as shown and described.
FIG. 1 is a perspective view of the inside surface of a filter element
having spacer construction showing our new design. This particular
perspective view is normally not seen through the side walls of the filter
element, but is illustrated for purposes of clarity.
FIG. 2 is a top plan view thereof; and,
FIG. 3 is a side elevational view thereof, all the sides being identical.
This particular side elevational view is normally not seen through the
side walls of the filter element, but us illustrated for purposes of
clarity.
The broken lines which define the bounds of the claimed design form no part
thereof. The broken line environmental showing is for illustrative
purposes only and forms no part of the claimed design.