Heated air can flow by natural convection or with blower assistance through {HEAD ~ a plenum} in {TAIL ~ the solar heating wall panel} to and from connected ducting 
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Heated air can flow by natural convection or with blower assistance through { HEAD ~ a plenum } in { TAIL ~ the solar heating wall panel } to and from connected ducting
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 TAIL TAIL OTH OTH OTH OTH OTH