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Cooler Master

MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower, Mesh Front Panel, Tempered Glass Panel, E-ATX up to 10.7”, Gen2 Type-C, Three CF120 120mm PWM Customizable ARGB Fan (MB520-KGNN-S00)

Name: Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower, Mesh Front Panel, Tempered Glass Panel, E-ATX up to 10.7”, Gen2 Type-C, Three CF120
Brand: Cooler Master
SKU: B0B5VFMN5W
Price: 119.99 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-06-09

$119.99

Buy on Amazon — $119.99 Compare to similar pc cases

*Price sourced from Amazon.com. Last updated 2026-06-09. Price and availability subject to change.

Bottom line: The MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower, Mesh Front Panel, Tempered Glass Panel, E-ATX up to 10.7”, Gen2 Type-C, Three CF120 120mm PWM Customizable ARGB Fan (MB520-KGNN-S00) is a niche pick — read recent reviews before buying in the pc cases category, priced around $119.99. Read recent reviews carefully before committing.

MasterBox 520 Mesh Blackout Edition is the ideal chassis for both novice and experienced gamers alike, providing users multiple options in case design to satisfy different needs. Whether you place upmost value on system performance and high-quality gaming experiences, or sleek aesthetics and an outlook that stands out, MasterBox 520 Mesh Black Fan Edition has something in for you. Pre-installed with three 120mm SickleFlow fans, the MasterBox 520 Mesh Black Fan Edition ensure systems installed runs cool and smoothly regardless of hardware choice. Additional mechanical upgrades such as a…

SpecPicks Verdict

SpecPicks classifies Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower… as a niche pick — read recent reviews before buying in the pc cases category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Cooler Master's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for pc cases of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by Cooler Master's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

FineMesh Performance Front Panel: Large mesh intakes offer unrestricted airflow and stellar thermals for demanding systems.
Three 120mm SickleFlow Fans Included: Pre-installed 120mm SickleFlow fans provide supeior airflow, ensuring low temperatures and high performance even the most intense gaming sessions.
Removable Top Panel: The top panel is entirely removable for improved access and easy installation of cooling solutions such as fans and radiators.
Screwless & Tool-Free TG Side Panel: The tempered glass side panel is secured with pins for easy removal, facilitating quick, easy installation.
Versatile Cooling Options: Supports up to seven 120mm fans and dual 360mm radiators on the top and front panel.
Removable HDD cage: The HDD cage is completely removable for improved access during assembly and system upgrades.

Full Specifications

Brand	Cooler Master
Color	ATX Mid-Tower ARGB
Fan Size	120 Millimeters
Material	Tempered Glass
Case Type	Mid Tower
Model Name	MB520-KGNN-S00
Light Color	ARGB
Model Number	MB520-KGNN-S00
Cooling Method	Air
Item Type Name	Gaming Computer Case
Number of Fans	3
Mfr Part Number	MB520-KGNN-S00
Total Usb Ports	2
Antenna Location	Gaming

Ready to buy?

Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower, Mesh Front Panel, Tempered Glass Panel, E-ATX up to 10.7”, Gen2 Type-C, Three CF120 120mm PWM Customizable ARGB Fan (MB520-KGNN-S00) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-06-09. Price and availability subject to change.