This article covers Cooler Master TD300 Mesh ミニタワーPCケース TD300-WGNN-S00 ホワイト CS8326.

Overview

Cooler Master’s MasterBox TD300 Mesh (model TD300-WGNN-S00) is a compact mini-tower PC case that stands out with its unique diamond-pattern polygon mesh front panel. The white finish gives it a clean, modern look that blends well into any desk setup, while the included two SickleFlow 120mm ARGB PWM fans provide out-of-the-box cooling and lighting. Built for Micro ATX and Mini ITX motherboards, this case strikes a fine balance between size and expandability, making it a solid choice for budget- to mid-range builds that still want room for powerful hardware. The removable top panel simplifies assembly and maintenance, and the case supports up to six 120mm fans or radiators in the front (up to 280mm), top (up to 240mm), and rear (120mm). GPU clearance reaches 344mm, and CPU cooler height tops out at 166mm, meaning most high-end components fit comfortably. The polygon mesh not only looks artistic but also improves airflow and acts as a dust filter. Priced under $100 USD (or around ¥8,000 in Japan), the TD300 Mesh offers features usually found in more expensive cases. It’s an excellent option for first-time builders or anyone wanting a compact but versatile chassis without sacrificing cooling performance.

Compatibility Guide

Motherboard support: Micro ATX and Mini ITX only. Standard ATX power supplies (PS/2) mount at the bottom with plenty of clearance. Maximum graphics card length: 344mm (without front radiator). With a front radiator, the limit drops to about 250mm. CPU cooler height: up to 166mm. Most tower air coolers fit, but very large dual-tower coolers may be tight. Storage: 2x 3.5-inch drives (with movable cage) and 2x 2.5-inch drives. The drive cage can be repositioned or removed to accommodate longer PSUs. * Radiator support: Front 280/240/120mm, Top 240/120mm, Rear 120mm.

Product Info

The MasterBox TD300 Mesh was released in late 2021 and sits in the entry-to-mid-tier segment of Cooler Master’s case lineup. It’s known for its distinctive polygon mesh design and robust cooling options for its size. The included fans are PWM-controlled, offering quiet operation. Warranty is 2 years for the Japanese market (authorized distributors).

Best Use Cases

Compact 1080p/1440p Gaming PC: Use a Micro ATX B660/B760 board with an ATX PSU and a mid-range GPU like the RTX 4060 or RX 7600. The case stays relatively small while offering enough airflow to keep components cool. RGB-Centric Build: The standard ARGB fans can be synced with motherboard software, and the acrylic side panel shows off internal lighting well. Add more ARGB fans or strips easily. Quiet yet Serviceable System: The removable top panel and movable drive cage make cleaning and part swaps straightforward. The mesh panels provide good ventilation, reducing the need for high fan speeds. Who should skip this case: Anyone needing a full ATX motherboard or more than two 3.5-inch HDDs. Also, if a glass side panel is a must, you might want to look at the regular TD300 (non-Mesh) version or competitors. ## Alternatives
In the same price bracket, the Fractal Design Meshify 2 Mini offers slightly better build quality and filtration but costs more. NZXT’s H210 has a cleaner aesthetic but restricts GPU airflow due to its blocked front. The TD300 Mesh wins on value and expandability, making it the best choice for buyers who prioritize cooling flexibility on a budget.

Things to Consider

The side panel is acrylic, not tempered glass — it scratches more easily and doesn’t look as premium. No front USB Type-C port. If your motherboard has a Type-C front header, you’ll need an adapter or leave it unused. Installing a front radiator significantly reduces GPU clearance. Plan your components carefully if using liquid cooling. The white paint may chip if cables rub against edges during installation; handle with care. ## FAQ Q: Can I use a standard ATX power supply? A: Yes, an ATX PSU fits in the bottom-mounted position. The maximum PSU length is about 180mm with the drive cage moved or removed. Q: Will a 280mm radiator fit in the front? A: Yes, a 280mm radiator can be mounted in the front, but it will reduce the maximum GPU length to around 250mm. Check your GPU dimensions before proceeding. Q: Does the case come with a vertical GPU mount? A: No, it does not. Vertical GPU mounting is not supported out of the box. You would need a third-party bracket and possibly modify the case.

Product Disclosure (Amazon)

  • Manufacturer: Cooler Master
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B09J4XYCJM
  • Note: This article covers a manufacturer-made product based on Amazon listing details.