The frame includes a selected number of {HEAD ~ horizontal muntins} and {TAIL ~ vertical mullions} defining a plurality of clear window openings 
The frame includes a selected number of { HEAD ~ horizontal muntins } and { TAIL ~ vertical mullions } defining a plurality of clear window openings
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH