Cooler Master

Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower

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

Status: Cooler Master MasterBox 520 Mesh Blackout…: Unavailable on Amazon as of 2026-10-20 10:22 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower: FineMesh front panel feeds unrestricted airflow to hot GPU and CPU builds; main trade-off: mesh front lets in more dust, so the filters need regular cleaning.

Unavailable on Amazon as of 2026-10-20 10:22 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: Cooler Master MasterBox 540 ARGB ATX Mid-Tower… — $278.00 on Amazon as of 2026-10-21 10:22 UTC (price may vary).

View Current Price — $278.00

Similar: Cooler Master TD500 Mesh White Airflow ATX… — $207.49 on Amazon as of 2026-10-21 18:15 UTC (price may vary).

View Current Price — $207.49

Similar: GAMDIAS ATX Mid Tower Gaming Computer PC Case… — $59.99 on Amazon as of 2026-10-21 20:20 UTC (price may vary).

View Current Price — $59.99

Original listing (currently unavailable) → Compare to similar pc cases

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-20

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ FineMesh front panel feeds unrestricted airflow to hot GPU and CPU builds
✓ Three 120mm PWM fans pre-installed, no extra fans needed to start
✓ Fits dual 360mm radiators across the top and front panels
✓ Tool-free pinned tempered glass side panel pops off without screws
✓ Front Gen2 USB-C plus E-ATX board support up to 10.7 inches

Cons

✗ Mesh front lets in more dust, so the filters need regular cleaning
✗ Only three of seven 120mm mounts populated, rear and top fans cost extra
✗ Tempered glass panel adds weight and crack risk versus steel
✗ Mid-tower depth tightens clearance for the largest E-ATX boards

Manufacturer description

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 scored Cooler Master MasterBox 520 Mesh Blackout Airflow ATX Mid-Tower using a rating × review-volume × price-fit model applied to published specs and reviews across the pc cases category. Cooler Master's pc cases lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

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	12 centimeters
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
Number of Items	1
Total Usb Ports	2
Antenna Location	Gaming
Compatible Devices	ATX, E-ATX, Micro-ATX, Mini-ITX
Enclosure Material	Tempered Glass
Removable HDD cage	The HDD cage is completely removable for improved access during assembly and system upgrades.
Removable Top Panel	The top panel is entirely removable for improved access and easy installation of cooling solutions such as fans and radiators.
Total USB 2.0 Ports	2
Full listing title	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)

Ready to buy?

Amazon shows no buyable offer for Cooler Master MasterBox 520 Mesh Blackout… at the last check. A similar in-stock product is Cooler Master MasterBox 540 ARGB ATX Mid-Tower…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $278.00