Space optimized dual chamber design the core x5 tg utilises dual chamber design to offer a tidy looking system by separating the liquid cooling loop and psu and hdd cages into a different chamber left and right 4mm thick tempered glass window the tempered glass is 4mm in thickness that guarantees the durability of the window stackable and expandable for enthusiasts with its endless stacking design the core x5 tg is in a class above the rest superior expandability the core x5 tg suppo