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