{TAIL ~ The support frame} 12 comprises a pair of side rails 20 and 22 which are welded to {HEAD ~ two lateral section members} 24 and 26 in a rectangular shape 
{ TAIL ~ The support frame } 12 comprises a pair of side rails 20 and 22 which are welded to { HEAD ~ two lateral section members } 24 and 26 in a rectangular shape
TAIL 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 HEAD OTH OTH OTH OTH OTH OTH OTH