The stiffening members 30 and 32 are each in {HEAD ~ the form} of {TAIL ~ an inverted u shaped channel} having its legs welded to the housing top 
of
The stiffening members 30 and 32 are each in { HEAD ~ the form } of { TAIL ~ an inverted u shaped channel } having its legs welded to the housing top
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH