A downwardly extending non linear pathway from {HEAD ~ the drainage openings} to the exterior of {TAIL ~ the diverter} prevents water from entering the wall interior through the channels 
A downwardly extending non linear pathway from { HEAD ~ the drainage openings } to the exterior of { TAIL ~ the diverter } prevents water from entering the wall interior through the channels
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH