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