In {HEAD ~ this regard}, the cross section of the periphery of {TAIL ~ the housing} 63 typifies a trapezoid while the dust bag cross section is maintained as a rectangle 
In { HEAD ~ this regard } , the cross section of the periphery of { TAIL ~ the housing } 63 typifies a trapezoid while the dust bag cross section is maintained as a rectangle
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH