Cooler Master

Cooler Master MasterBox MB311L Black – Dual ARGB Fans, Fine Mesh Front Panel, Mesh Intake Vents, Tempered Glass Mini-Tower PC Case

  • Fine Mesh Front Panel
  • Mesh Intakes
  • Dual ARGB Fans
  • Optimized Airflow
  • Tempered Glass Side Panel
  • Adaptable Drive Cage

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Brand Cooler Master SKU CASE-COOL-MB311LBLK Manufacturer part MCB-B311L-KGNN-S02 EAN 4719512097595

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Product Description

Introducing the MasterBox MB311L, a Mini-Tower airflow PC case designed for the latest gaming hardware. With a front panel made entirely of Fine Mesh and dual honeycomb vents, it maximizes airflow for efficient cooling. The internal layout ensures high compatibility for gaming components and future upgrades. Combining versatility and presentation, the MasterBox MB311L delivers both exceptional performance and a visually stunning gaming system. Elevate your gaming experience with this powerful and stylish case.

Features

  • Fine Mesh Front Panel
  • Mesh Intakes
  • Dual ARGB Fans
  • Optimized Airflow
  • Tempered Glass Side Panel
  • Adaptable Drive Cage
Cooler Master MasterBox MB311L Interior Side View

About the Cooler Master MasterBox MB311L PC CASE

Cooler Master MasterBox MB311L Front View

FINE MESH FRONT PANEL

Cooler Master’s Fine Mesh design on the front panel is proven to provide proficient airflow while filtering out dust.

Cooler Master MasterBox MB311L Front Angled View
Cooler Master MasterBox MB311L Top Angled View

MESH INTAKES

Large, mesh intakes span each side of the front panel to provide additional airflow to system.

Cooler Master MasterBox MB311L Lifestyle Image

DUAL ARGB FANS

Two pre-installed 120mm ARGB fans can be managed by the motherboard, and connected by the included splitter, to create a comprehensive ARGB lighting system.

OPTIMIZED AIRFLOW

Airflow is optimized by a collaboration between the Fine Mesh front panel, additional mesh intakes, top panel ventilation, and rear exhaust.

TEMPERED GLASS SIDE PANEL

Hardware, custom-loop cooling, and the pure pride of the builder is shown in panoramic view through an edge-to-edge tempered glass side panel.

Cooler Master MasterBox MB311L Side Panel View
Cooler Master MasterBox MB311L Rear View

ADAPTABLE DRIVE CAGE

The drive cage is able to shift toward the front to accommodate for PSU space, backwards to provide additional radiator space, or even completely removed.

Cooler Master MasterBox MB311L Lifestyle Image 2

VERSATILE COOLING OPTIONS

Support for up to six fans and front, top, and rear radiator support ensure that performance is not compromised.

Cooler Master MasterBox MB311L Rear View
Cooler Master MasterBox MB311L Interior Side View

ROOM FOR UPGRADES

Support for up to a 344mm graphics card, a 166mm CPU cooler, and up to a 325mm PSU in length provides room for upgrades to stay ahead of the game.

SICKLEFLOW PWM FANS INCLUDED

Newly Optimized blade design with updated curve that provides best balance between airflow and static pressure to take the heat away while remain extremely silence.

Cooler Master MasterBox MB311L Top View

Specification

Specification

Warranty 2 Years
Dimensions 435.5 x 217.5 x 410mm
Weight 5.47 kg
CPU Cooler Maximum Height 166 mm
RGB Fans Yes
Graphics Card Maximum Length 344 mm
Power Supply Unit Maximum Length 140 mm (HDD cage in backmost position), 325 mm (w/o front radiator & HDD cage)
Supported Cooling Systems Air cooling, Water cooling
Built-in Cooling 2x 120mm 650~1800RPM SickleFlow PWM ARGB
Fan Mounts 1 x rear 120 mm fan, Front: 3 x 120 / 2 x 140 mm, Top: 2 x 120 / 140 mm
Radiator Mounts Front: 120 / 140 / 240 / 280 mm radiator
Form Factor Micro ATX, Mini ITX
Supported Motherboard Sizes Micro ATX, Mini ITX
Supported PSU Size ATX
Connectors 1 x 3.5 mm audio in (mic), 1 x 3.5 mm audio out (headphone), 1 x ARGB 2-to-3 Splitter, 1x ARGB/PWM Hub, 2x USB 3.2 Gen. 1
Drive Bays 2 x 2.5", 2 x 3.5"
Motherboard Expansion Slots 4 Expansion slots
RGB Case Lighting Yes
Materials Steel, Mesh, Plastic, Tempered Glass
Colour Black
Windowed Side Panel Yes
Height (mm) 410mm
Length (mm) 435.5mm
Width (mm) 217.5mm

Product identity

Brand Cooler Master
SKU CASE-COOL-MB311LBLK
Manufacturer part MCB-B311L-KGNN-S02
Barcode 4719512097595

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Delivery

Your Cooler Master MasterBox MB311L Black - Dual ARGB Fans, Fine Mesh Front Panel, Mesh Intake Vents, Tempered Glass Mini-Tower PC Case goes by Express Tracked Delivery — order before 2pm Monday to Friday and it goes out the same day. Next working day delivery.

Delivery information

Returns

Changed your mind? Send your Cooler Master MasterBox MB311L Black - Dual ARGB Fans, Fine Mesh Front Panel, Mesh Intake Vents, Tempered Glass Mini-Tower PC Case back unopened within 30 days for a full refund. Anything faulty can be rejected for a full refund within 30 days of delivery.

Returns policy

Ways to pay

Pay by card, or spread the cost of your Cooler Master MasterBox MB311L Black - Dual ARGB Fans, Fine Mesh Front Panel, Mesh Intake Vents, Tempered Glass Mini-Tower PC Case over 4 instalments with Clearpay. Clearpay is a form of credit — make sure you can repay on time, as late fees apply. Every order earns loyalty points towards the next one.

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Need a hand?

Not sure the Cooler Master MasterBox MB311L Black - Dual ARGB Fans, Fine Mesh Front Panel, Mesh Intake Vents, Tempered Glass Mini-Tower PC Case is right for your build, or whether your power supply is up to it? Ask us.

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