Cooler MasterMasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)

Cooler MasterMasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)

Q: Is this case wide enough to support a cooler master hyper 212 evo?

I know what the official CM specs are, but I think it will fit. This guy installed a taller cooler with its cover and it fit. https://www.vortez.net/articles_pages/cooler_master_masterbox_q300l_review,8.html

Q: I've seen photos of the handle (from a Q300P) being attached to the center of the top panel of this case. Is this possible?

You can remove the plastic bit that has the cooler master logo on it and install handles on the case like the Q300P

Q: what are the size and placements of the fans?

There are 3 fans (120mm) in total. 1 exhaust fan in the rear, and 2 intake fans at the front. -CM Myke

Q: Does the case come pre-assembled?

Hello Kevin, The case does come assembled, but you will need to plug in the connectors, and open it up to install your components. CM-PNguyen

Product ID: 59059637

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Details

Brand
Cooler Master
Motherboard Compatability
Micro-ATX and
Case Type
Mini-Tower
Recommended Uses For Product
Gaming
Color
Black
Material
Alloy Steel

🧲Magnetic dust filters for easy cleaning

❄️Optimized airflow with 5 fan slots + 240mm liquid cooler

🖥️Supports GPUs up to 360mm for powerful builds

Frequently Bought Together

Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)

AMD Ryzen 5 5500 6-Core, 12-Thread Unlocked Desktop Processor with Wraith Stealth Cooler

Thermaltake Smart 500W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Cooling Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0500NPCWUS-W

Description

🖤 Build Bold, Stay Cool, and Stand Out.

OPEN THERMAL DESIGN - Perforated panels on all sides ensure your components stay cool under pressure.
MAGNETIC DUST FILTERS - Effortless maintenance meets sleek design—keep your rig pristine without the hassle.
SPACIOUS MICRO ATX INTERIOR - Room to grow with support for large GPUs, tall coolers, and future upgrades.
ADJUSTABLE MODULAR I O PANEL - Customize your setup with flexible I/O placement for ultimate desk ergonomics.
TRANSPARENT ACRYLIC SIDE PANEL - Show off your build like a pro—edge-to-edge clarity that demands attention.

The Cooler Master MasterBox Q300L is a versatile Micro-ATX tower featuring magnetic dust filters, a fully ventilated open thermal design, and a transparent acrylic side panel. It supports large GPUs up to 360mm, CPU coolers up to 159mm, and offers flexible I/O positioning, making it perfect for professionals seeking a sleek, customizable, and high-performance PC case.

Specifications

Wireless Type	802.11a
Number of USB 3.0 Ports	2
Brand	Cooler Master
Series	Q300L
Item model number	MCB-Q300L-KANN-S00
Item Weight	1.06 pounds
Product Dimensions	15.39 x 9.06 x 15 inches
Item Dimensions LxWxH	15.39 x 9.06 x 15 inches
Color	Black
Department	Computer Cases
Manufacturer	Cooler Master
ASIN	B0785GRMPG
Is Discontinued By Manufacturer	No
Date First Available	December 5, 2017

Have a Question? See What Others Asked

Is this case wide enough to support a cooler master hyper 212 evo?

I've seen photos of the handle (from a Q300P) being attached to the center of the top panel of this case. Is this possible?

what are the size and placements of the fans?

Does the case come pre-assembled?

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