In {TAIL ~ the preferred embodiment}, {HEAD ~ the center portion} 46 is spaced closer to the open top end 44A of the body 44 such as to allow the open bottom end 44B of the body 44 to be securely mounted on the vent pipe 40 
In
In { TAIL ~ the preferred embodiment } , { HEAD ~ the center portion } 46 is spaced closer to the open top end 44A of the body 44 such as to allow the open bottom end 44B of the body 44 to be securely mounted on the vent pipe 40
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH