Cooler Master MasterFrame 400 Mesh Black

The Cooler Master MasterFrame 400 Mesh Black features a premium open-frame micro ATX chassis with a mesh-optimised airflow design and a sturdy FreeForm 2.0 aluminium frame for compact performance builds. It supports Mini-ITX and Micro-ATX motherboards, GPUs up to 390mm long and CPU coolers up to 190mm tall plus extensive cooling with room for up to nine fans and top-mounted 360mm radiators. The case includes a tempered glass side panel, a pre-installed SickleFlow 120mm ARGB fan, a built-in GPU support bracket and modern front I/O with USB 3.2 Gen 2x2 Type-C and dual USB 3.2 Gen 1 Type-A ports. Its dual-orientation design lets you build vertically or horizontally to suit your setup.

Features

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MasterFrame 400 Mesh

Compact Power, No Compromise

Premium open-frame Micro-ATX case designed for compact performance builds, efficient airflow, and refined structural design inspired by the FreeForm 2.0 platform.

The MasterFrame 400 Mesh is a premium open-frame compact chassis crafted for Micro-ATX and Mini-ITX platforms. Embracing the FreeForm 2.0 design philosophy, it features a precision aluminium frame, dual-orientation support, and enhanced mesh airflow. With premium aesthetics and performance-grade clearance, it empowers creators and builders to push compact PC design further.

• Pre-installed Rear Fan 1x SickleFlow 120 mm ARGB Black
• Extensive fan support up to 9 fans, including 200 mm options on front and bottom
• Supports Mini-ITX and Micro-ATX motherboards
• Radiator support up to 360 mm at the top
• Tempered glass side panel
• USB 3.2 Gen 2x2 Type-C

FreeForm 2.0 Exo-Structure

The exposed aluminium frame supports versatile positioning and adapts seamlessly to both vertical and horizontal layouts.

Dual-Orientation Ready

Stand it tall, lay it flat, or flip it sideways. Detachable feet and a smart, adaptable design make it easy to fit any workspace or creative setup.

*Vertical orientation may require additional accessories or adaptors depending on component layout, connector clearance, or cable routing.

Compact Motherboard Compatibility

Supports Mini-ITX and Micro-ATX motherboards, delivering optimal compatibility for compact, high-performance builds without compromising cooling or component clearance.

Ample GPU Clearance

Accommodates graphics cards up to 390mm in length, providing full compatibility for high-end GPUs and future upgrades.

Extensive Cooling Support

Supports up to nine fans, including 200 mm fans compatibility, plus top-mounted 360 mm radiators for superior airflow in a compact build.

*200 mm fan support varies by location and fan thickness.

Tool-Free Panel Removal

Easily remove side panels without tools for quick access and modifications during build or upgrades.

Included GPU Support Bracket

The included GPU support bracket prevents GPU sag and ensures stability during intense gaming or high-performance workloads, maintaining a clean and secure build.

Modern Front I/O

Stay connected and ready for anything—MasterFrame 400 Mesh features USB 3.2 Gen 2x2 Type-C, dual USB 3.2 Gen 1 Type-A, and a combo audio jack for ultra-fast data, charging, and seamless peripheral support.

ARGB Visual Power

Despite its compact size, the MasterFrame 400 Mesh comes alive with a pre-installed 120 mm SickleFlow ARGB fan—quiet, powerful, and fully customisable.