The top cap member has a channel like {HEAD ~ configuration} which includes {TAIL ~ outer side flanges} which slidably overlap and embrace exterior sides of the panel member to permit at least limited vertical positional adjustability of the top cap member relative to the panel member 
includes
The top cap member has a channel like { HEAD ~ configuration } which includes { TAIL ~ outer side flanges } which slidably overlap and embrace exterior sides of the panel member to permit at least limited vertical positional adjustability of the top cap member relative to the panel member
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH