The flange 30 may be provided on {HEAD ~ the exterior} of {TAIL ~ the curve}, and may have approximately four apertures 32 spaced along the length of the flange 
of
The flange 30 may be provided on { HEAD ~ the exterior } of { TAIL ~ the curve } , and may have approximately four apertures 32 spaced along the length of the flange
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH