①、Axial fans with asynchronous external rotor motor
②、Number of poles
③、S：Single-phase motor
T：Three-phase motor
④、Impeller diameter in mm
⑤、S：Sucking
B：BIowing
⑥、A：Without guard grill
B：Flat guard grill
C：Fl

①、Axial fans with asynchronous external rotor motor

②、Number of poles

③、S：Single-phase motor
T：Three-phase motor

④、Impeller diameter in mm

⑤、S：Sucking
B：BIowing

⑥、A：Without guard grill
B：Flat guard grill
C：Flat guard grill with sidepiece
D：Concave guard grill with sidepiece
E：Inlet ring
F：Inlet ring with mounting plate

⑦、S：Double speeds
T：Three-speed
V：Double Voltages