Phanteks Enthoo PRO M Acrylic Window Computer Case, Anthracite Gray Edition PH-ES515PA_AG Enthoo Pro M includes 1x140mm fan in the rear and one in the front. Ability to upgrade to additional fan is possible. All fans included are Phanteks new redesigned & better performing SP series fans. Brushed aluminum look. Clean interior - Hidden PSU and HDDs. Full Acrylic Window Panel Optimal airflow - Direct airflow to CPU / GPU. 2x PH-F140SP (140mm). Offset Radiator Bracket. Reservoir mounting locations. Pump Slot 1x Drop-N-Lock SSD brackets included. Removable HDD cage for installation of long PSUs (&gt;180mm) / water pump. Equipped with removable dust filters (1x front, 1x bottom, 1x top magnetic). Clean cable management using Phanteks' preinstalled Hoop-N-Loop cable ties. Removable optical drive cage. Optional 5x HDD bracket for 3.5/2.5 HDD upgrade