... 220mm, Typical Grade:N35,N40,N42,N45,N52,35H,38SH Speaker Neodymium MagnetGrade Available:N35, N38, N40, N42, N45, N48, N50 ... ) The highest working temperature can be 2300C (AH grade L-T Series).• Need to be protected against oxidation—by coating or plating ... ¡ãCN3533-36264-28811.901190>10.9>872>12>96031080N3836-39288-31212.301230>11.3>904>12>96031080N4038-41304-32812.701270>11.6 ...