ship from Japan Size: 140 x 140 x thickness 25mm Rib: Yes Weight: 168g Connection: PWM 4 pin Bearing: Hydro Dynamic Bearing Fan Speed: 750~1500rpm Airflow (maximum): 78.5CFM Static pressure (maximum): 1.6mm/H2O Noise (maximum): 20dBA Drive voltage: DC12V Rated current: 0.16A Cable length: Fan cable 50cm Period: 1 year Accessories: Mounting screws