A solar heat collector made up of several metal plates, each bent to provide a first planar portion and {HEAD ~ a second planar portion} at {TAIL ~ substantially 90°}, with a flanged hole through each first portion 
at
A solar heat collector made up of several metal plates , each bent to provide a first planar portion and { HEAD ~ a second planar portion } at { TAIL ~ substantially 90 ° } , with a flanged hole through each first portion
OTH 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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH