https://markair.com.au/product/fans-backward-curve-ebm-papst-external-rotor-ebm-papst-355mm-415v-4-pole-backward-curve-fan/
R4D355-AO10-10 | ebm-papst 355mm 415V 4 Pole Backward Curve Fan - Markair Components - Fans & Motors
ebm-papst 355mm 415V 4 Pole Backward Curve Fan