Specification:ModelR9-NBC-NPX3-GPColorBlackMaterialsPlastics, Metal mesh, RubberWeight0.9 kg, 1.98 lbsDimension400 x 310 x 51~71mm (W x H x D)Fan Dimension200 x 200 x 20mm fan (W / H / D)Fan Speed500 ~ 850(±15%) R.P.M.Fan Speed AdjustmentFan speed dialFan Airflow65 ~ 76.5 CFMFan Noise Level16 ~ 23 ..