FIG. 1 is a perspective view of two conduits mated at a respective coupling flange;

FIG. 2 is a front view of a first end of a conduit showing a first coupling flange;

FIG. 3 is a top view of the first end of the conduit of FIG. 2;

FIG. 4 is a front view of a second end of the conduit coupling flange;

FIG. 5 is a top view of the second end of the conduit of FIG. 4;

FIG. 6 is a right side view of the first end of the conduit; the left side view being identical;

FIG. 7 is a right side view of the second end of the conduit; the left side view being identical;

FIG. 8 is a right side view of a first coupling flange of one conduit mated with a second coupling flagne of another conduit;

FIG. 9 is a bottom view of the first end of the conduit of FIG. 2; and,

FIG. 10 is a bottom view of the second end of the conduit of FIG. 4.

The broken line showing of a fragmented portion of conduit and buttressing elements are for illustrative purposes only and forms no part of the claimed design. In addition, the flanges are shown detached for clarity of illustration.