160W Axial Fan, 392mm, 230 V ac. Air Flow: 4235m³/h. Fan Speed: 1430rpm. Bearing Type: Ball. Noise Level: 69dB. Maximum Current: 730mA. Dimensions: 502 (Dia.) x 147mm. Depth: 147mm. Diameter: 502mm. MPN: S4E400-BP02-31, ebm-papst