FIG. 1 is a top view of a duplex adapter insert;
FIG. 2 is a left side view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear perspective view thereof;
FIG. 8 is a top view of the adapter insert of FIG. 1 mated with a contextual insert frame;
FIG. 9 is a left side view thereof;
FIG. 10 is a front view thereof;
FIG. 11 is a right side view thereof;
FIG. 12 is a rear view thereof; and,
FIG. 13 is a bottom view thereof.
Dot-dash pattern broken lines depict an internal boundary within the duplex adapter insert. Neither the area within the dot-dash broken lines nor the line itself forms any part of the claimed design.