Open grill and 180 mm front fans optimized for maximum air intake Newly developed 180 x 38 mm Dynamic X2 PWM or Prisma AL PWM ARGB fans (in the RGB version) leverage power, size, and thickness for massive air-moving capacity Includes five PWM fans (three 140 mm and two 180 mm) for balancing performance, cooling and noise New layout with expansive base intakes and extra-large bottom fan support offers exceptional GPU cooling Optional front and bottom nylon filters included, allowing the user to prioritize between dust filtering or even higher airflow Streamlined open interior provides plenty of breathing room for components and maximizes performance potential for both air and water cooling Comes with the new Nexus 9P Slim PWM fan hub pre-installed