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The Tower 300 is an m-ATX case with a classic vertical case design and comes in an octagonal prism shape. It supports up to a 420mm AIO radiator on the right side and can accommodate up to eight 120mm/140mm fans. With a separately sold Chassis Stand Kit. users can enjoy a unique view with a special horizontal placement.

The Legacy Continues
As a new edition of The Tower Series. The Tower 300 inherits the classic vertical case design but comes in an octagonal prism shape. It has amazing hardware compatibility. accommodating a 4090 GPU. a standard-sized power supply up to 220mm. and a 420mm AIO radiator. What's more. it can accommodate up to eight 120mm/140mm fans on the top. back. PSU cover and right side fan bracket. If you want to make The Tower 300 more visually appealing. you can purchase the separately sold 3.9" LCD Screen Kit and Chassis Stand Kit to upgrade the build| the former to display real-time component information and the latter for a unique view with a special horizontal placement.

Classic Vertical Body Design
The Tower 300 retains the iconic contours of its predecessors. with a vertical body design but in an octagonal prism shape. allowing the chassis to have a smaller footprint and providing flexibility and minimizing obstructions to your gaming and workspace.

A Unique View - Horizontal Case Placement
With the optional chassis stand kit. which includes a bottom cover panel and a display stand for horizontal case placement. The Tower 300 allows for easy customization of the case for a unique viewing experience.

How to install:
1. Unscrew the original feet located on the base of the chassis
2. Install the new bottom cover of the chassis and carefully place The Tower 300 on the stand
*Note: It is recommended to position the radiator higher than the AIO pump.

Supports up to a 420mm Radiator on the Right
The Tower 300 delivers exceptional cooling that it supports up to a 420mm radiator on the right side. which effectively reduces the temperature inside the chassis and maintains optimal system performance.

Tool Free Panels for Easy Access
The Tower 300 features three 3mm tempered glass panels on the front and two perforated panels on each side. All are easily removable without tools.

Two CT140 PC Cooling Fans Pre-installed
The Tower 300 features two 140mm PWM fans on the top to provide good cooling performance.

Unify your fans with your build!
Thermaltake launches brand-new CT series fans. allowing users to choose from black or white. RGB or non-RGB. to match whatever color scheme you have.

Visually Pleasing. Totally Interactive
Maximize your Tower 300’s visual effects by upgrading it with our LCD Screen Kit.
The 3.9” LCD Display allows you to monitor real-time information and upload any images or GIFs to add extra flair using the TT RGB Plus 2.0 software. It also allows you to interact with the cooling components that feature the same LCD displays. The latest version includes weather mode and time mode for users to expand the usage of our LCD displays.

Personalize Your LCD Display
Through the TT RGB Plus 2.0. the 3.9'' LCD display presents real-time information and plays JPG and GIF files with 128*480 resolution. What’s more is users can even show the time and weather information on the display. bringing great visual aesthetics and highly customizable functions to your Tower 300 chassis.

Choose The Way You Install
On the right side. The Tower 300 has the capacity to support either three 120/140mm fans or a 420mm/360mm AIO radiator. Installation is a breeze thanks to the removable fan bracket. which simplifies the process.

Air Intake and Exhaust
Featuring a vertical chassis design. The Tower 300 still has well-designed cold air intakes and hot air exhausts to keep the internal temperature low at all times.

We've Tested Everything. So You Don’t Have To
At Thermaltake. we always stress test our products under harsh conditions to ensure product quality. The Tower 300 products were tested at 100% full load for 30 minutes. with the most high-end CPU. GPU. and motherboard at the time of test. while paring with a consumer-style setup. allowing us to test how the chassis performs under real-world situations.

Massive Airflow & Incredible Performance
Thermal images were taken during thermal testing. Thanks to two CT140 PC Cooling Fans pre-installed. we were able to ensure that The Tower 300 comes with massive airflow. which guarantees amazing cooling performance and a low interior temperature while using the most upscale components.

Perfect Dust Protection
The Tower 300 has well-designed filters on the top. rear. inner sides. and inner bottom layer to protect the system from dust.

Excellent Hardware Support & Cooling Solutions
The Tower 300 has good hardware support. It can support a CPU cooler with a maximum height of 210mm. a GPU with a maximum length of 400mm (without power cover). a power supply with a length of up to 220mm. three 2.5‘’ SSDs or three 3.5‘’ HDDs in total. Two CT140 fans are pre-installed on the top of the case to improve thermal efficiency. An additional 120mm or 140mm fan can be installed on top of the PSU cover. and up to a 420mm/360mm AIO CPU cooler can be installed on the right side of the case. for maximum cooling performance.

How Much Storage Is Totally Up To You
For the storage compatibility. The Tower 300 gives maximum support of up to three 2.5‘’ SSDs or three 3.5‘’ HDDs in total.

Handy I/O Ports
One USB 3.2 (Gen 2) Type-C and two USB 3.0 ports are placed on the top panel to grant direct access when needed.

DMD: Dismantlable Modular Design
No more unreachable screw corners or gaps. installation can be a breeze with our Dismantlable Modular Design.







Design
Material: SPCC. Tempered glass
Form factor: Micro Tower
Type: PC
Product colour: Black
Supported motherboard form factors: micro ATX. Mini-ITX
Number of 3.5" bays: 3
Number of 2.5" bays: 3
Number of internal 3.5" bays: 3
Number of expansion slots: 4
Feature: Side window
Feature: Anti-dust filter
Maximum CPU cooler height: 21 cm
Maximum graphics card length: 40 cm
Maximum PSU length: 22 cm
Power supply
Power supply location: Bottom
Ports & interfaces
Feature: Audio input
Feature: Audio output
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity: 1
ARGB ports quantity: 1
Cooling
Number of side fans supported (max): 3
Side fans diameters supported: 120.140 mm
Number of rear fans supported (max): 3
Rear fans diameters supported: 120.140 mm
Top fans installed: 2x 140 mm
Number of top fans supported (max): 2
Top fans diameters supported: 120.140 mm
Fan speed: 1500 - 1500 RPM
Side radiator sizes supported: 120.140.240.280.360.420 mm
Storage
Supported HDD sizes: 2.5.3.5"
Weight & dimensions
Width: 342 mm
Depth: 281 mm
Height: 551 mm
Weight: 8.3 kg