In addition, {TAIL ~ the interior sidewalls} of {HEAD ~ cavity body} 105 may taper outward from mounting board 104 to output window 108, rather than perpendicular to output window 108 as depicted 
In addition , { TAIL ~ the interior sidewalls } of { HEAD ~ cavity body } 105 may taper outward from mounting board 104 to output window 108 , rather than perpendicular to output window 108 as depicted
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH 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