This results in the arrangement as shown in FIGS 5 and 6, whereby several of {HEAD ~ a plurality} of mounting brackets 1A, {TAIL ~ 1B} can be spaced and clampingly positioned along the length of a guiding rail 105 intended to be eventually mounted on the brackets 1A, 1B once these have been properly attached to the wall surface 101 
of
This results in the arrangement as shown in FIGS 5 and 6 , whereby several of { HEAD ~ a plurality } of mounting brackets 1A , { TAIL ~ 1B } can be spaced and clampingly positioned along the length of a guiding rail 105 intended to be eventually mounted on the brackets 1A , 1B once these have been properly attached to the wall surface 101
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