{HEAD ~ The rear side insulation} can advantageously be provided by {TAIL ~ an inflatable plastic member} structurally similar to that provided on the upper or solar exposed side of the panel 
{ HEAD ~ The rear side insulation } can advantageously be provided by { TAIL ~ an inflatable plastic member } structurally similar to that provided on the upper or solar exposed side of the panel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH