{HEAD ~ The flange} 28 may be provided on the interior of the curve of the channel section 14, and may have {TAIL ~ approximately three apertures} 32 spaced along the length of the flange 
have
{ HEAD ~ The flange } 28 may be provided on the interior of the curve of the channel section 14 , and may have { TAIL ~ approximately three apertures } 32 spaced along the length of the flange
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH