ship from Japan Size: 80 x 80 x thickness 25mm Rib: None Weight: 68g Connection: PWM 4 pin Bearing: Hydro Dynamic Bearing Fan Speed: 900~2000rpm Airflow (maximum): 27CFM Static pressure (maximum): 1.65mm/H2O Noise (maximum): 21.5dBA Drive voltage: DC12V Rated current: 0.1A Cable length: Fan cable 50cm Period: 1 year Accessories: Mounting screws, anti-vibration rubber bushes