{HEAD ~ The catalyst carrier} 15, wherein {TAIL ~ the outermost peripheral cell wall} has a thickness in a range of approximately 0.25 mm through approximately 0.50 mm 
wherein
{ HEAD ~ The catalyst carrier } 15 , wherein { TAIL ~ the outermost peripheral cell wall } has a thickness in a range of approximately 0.25 mm through approximately 0.50 mm
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH