{TAIL ~ an inner side wall} of {HEAD ~ said U shaped section} provided with holes extending therethrough and positioned to correspond with the plurality of mounting holes in the unitary mounting wall to provide a clearance for the fasteners 
{ TAIL ~ an inner side wall } of { HEAD ~ said U shaped section } provided with holes extending therethrough and positioned to correspond with the plurality of mounting holes in the unitary mounting wall to provide a clearance for the fasteners
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD 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 OTH OTH OTH OTH OTH