FIG. 1 is a front view of a wall adapter for filter underdrain of a first embodiment showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front perspective left side view thereof;
FIG. 6 is a rear perspective view thereof;
FIG. 7 is a front perspective view thereof;
FIG. 8 is a front view of a wall adapter for filter underdrain of a second embodiment showing our new design;
FIG. 9 is a rear view thereof;
FIG. 10 is a top view thereof;
FIG. 11 is a bottom view thereof;
FIG. 12 is a front perspective view thereof;
FIG. 13 is a rear perspective view thereof; and,
FIG. 14 is a front perspective view.
The broken line showings of FIGS. 7 and 14 depict environment only that form no part of the claim.
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