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Overview

⚫ Micro-ATX tower with magnetic dust filter, transparent acrylic side panel, adjustable I/O, and fully ventilated airflow. Ideal for budget-friendly builds with excellent cooling and expansion options.

Cooler Master MasterBox Q300L Micro-ATX Tower (Black)

Model: Bulk-Buy-2040
Web Code: 19632969
Sold and shipped by | 3.0 seller rating (2 reviews)

Available for deliveryAvailable online only

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Seller Return Policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

The Cooler Master MasterBox Q300L is a versatile Micro-ATX tower that blends style, functionality, and affordability. Its magnetic dust filter ensures a clean interior, while the transparent acrylic side panel showcases your components. Fully ventilated airflow optimizes cooling for CPU, GPU, and other hardware. Adjustable I/O positioning enhances flexibility for desk placement. Supporting Micro-ATX motherboards, multiple storage options, and expansion cards, the Q300L is ideal for gaming, home, or office setups. Its lightweight yet durable construction allows easy transport, while the minimalist black design complements any environment. With practical design and high airflow efficiency, this case suits users seeking reliable cooling, aesthetic appeal, and expandability without overspending. Perfect for entry-level and mid-range gaming or workstation builds.

Product Condition
Brand New
Type
Pouch/Holster

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Computer components
Return/Exchange Period
30 days
Condition
Unopened

We can only acceept returns that are in their original packaging and do recommend customers check manufacturer's warranties for exclusions.

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