The Cooler Master MasterFrame 400 Mesh Black is a mid-tower computer case designed for optimal airflow and component compatibility. Featuring a mesh front panel and multiple ventilation points, this chassis allows for efficient cooling for high-performance systems. It supports ATX, Micro-ATX, and Mini-ITX motherboards and has dimensions of approximately 50 cm in height, 21 cm in width, and 45 cm in depth. It includes several dust filters at the front, top, and bottom to keep the internal components clean. The side panel made of tempered glass provides a clear view of the installed hardware while maintaining robustness. Storage options include two drive bays for 3.5-inch drives and four for 2.5-inch drives, allowing for various storage configurations. Cooling support includes up to seven 120mm fans or six 140mm fans, with radiator support for 360mm units at the front, 280mm at the top, and 120mm at the rear. The case features a power supply cover for clean cable management and several rubber grommets for cable routing. The front connections consist of two USB 3.0 ports, one USB 2.0 port, and audio jacks. Tool-less mounting mechanisms for side panels and drive bays simplify the assembly process. The interior provides ample space for graphics cards up to 41 cm in length and CPU coolers up to 17 cm in height. Primarily made of steel with plastic accents, the case offers structural rigidity while weighing approximately 8.5 kg. The black finish provides a neutral appearance suitable for various build themes. This chassis represents a successor model in the Cooler Master product line, focusing on practical thermal performance and build comfort for PC enthusiasts.