{TAIL ~ The assembly} is provided with ribs extending entirely around the bottom surface of the seat for {HEAD ~ improved structural support} 
{ TAIL ~ The assembly } is provided with ribs extending entirely around the bottom surface of the seat for { HEAD ~ improved structural support }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD