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