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