FIG 6 shows a typical installation detail for {HEAD ~ second configuration signal device assembly} 20 near {TAIL ~ the rear end} of mailbox 10 
FIG 6 shows a typical installation detail for { HEAD ~ second configuration signal device assembly } 20 near { TAIL ~ the rear end } of mailbox 10
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH