{HEAD ~ an inner cylinder} supported by and sealingly attached to {TAIL ~ the main plate} such that the inner cylinder at least partially surrounds the stack to define a cathode air stream plenum in fluid communication with the cathodes, wherein the exhaust plenum is in fluid communication with the anode air stream plenum and cathode air stream plenum 
{ HEAD ~ an inner cylinder } supported by and sealingly attached to { TAIL ~ the main plate } such that the inner cylinder at least partially surrounds the stack to define a cathode air stream plenum in fluid communication with the cathodes , wherein the exhaust plenum is in fluid communication with the anode air stream plenum and cathode air stream plenum
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH