The 14.5% increase in the top mesh panel opening and the 14% increase in the side mesh opening, along with the fully open bottom panel and three dust filters ensures improved airflow performance.The 14.5% increase in the top mesh panel opening and the 14% increase in the side mesh opening, along with the fully open bottom panel and three dust filters ensures improved airflow performance | Lian Li | | O11DEXL-X O11 Dynamic EVO XL Full Tower Gaming Case | Black | Best Buy