The fourth merchandiser module is positioned next to {HEAD ~ the first merchandiser module} and {TAIL ~ the second merchandiser module} opposite the third merchandiser module 
The fourth merchandiser module is positioned next to { HEAD ~ the first merchandiser module } and { TAIL ~ the second merchandiser module } opposite the third merchandiser module
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH