FIGS 5 and 6 illustrate {HEAD ~ a first step} of mounting {TAIL ~ the brackets} 1 to a mounting surface 101 
of mounting
FIGS 5 and 6 illustrate { HEAD ~ a first step } of mounting { TAIL ~ the brackets } 1 to a mounting surface 101
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH