CoolBox PC Gaming GA300 Grid Line

Tower · ATX / mATX / ITX · GPU up to 340 mm

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Form factor Tower
Motherboard support ATX / mATX / ITX
GPU clearance 340 mm

CoolBox PC Gaming GA300 Grid Line is a tower PC cabinet that takes ATX / mATX / ITX motherboards and graphics cards up to 340 mm long. It came out in 2025.

Released: 2025-07-09

Specifications

Key specs

Form factor: Tower
Motherboard support: ATX / mATX / ITX
GPU clearance: 340 mm
Released: 2025-07-09
Part number: COO-CHA-GA300B-0
EAN / UPC: 8436624420665

Design

Material: Acrylonitrile butadiene styrene (ABS), SPCC
Form factor: Tower
Type: PC
Product colour: Black
Supported motherboard form factors: ATX, micro ATX, Mini-ITX
Number of 3.5" bays: 1
Number of 2.5" bays: 3
Number of internal 3.5" bays: 1
Number of storage drives supported: 4
Number of expansion slots: 7
Side window: Yes
Suitable for: Gaming
Illumination: Yes
Illumination colour: Multi
Illumination location: Case fans
Tempered glass panel(s): Yes
Cable management: Yes
Reset button: Yes
On/off button: Yes
RGB control button: Yes
LED indicators: Yes
Maximum CPU cooler height: 16.4 cm
Maximum graphics card length: 34 cm

Power supply

Power supply location: Bottom
Supported power supply form factors: ATX

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Ports & interfaces

Audio input: Yes
Audio output: Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity: 1

Cooling

Front fans installed: 3x 120 mm
Number of front fans supported (max): 3
Front fans diameters supported: 120 mm
Side fans installed: 1x 140 mm
Number of side fans supported (max): 1
Side fans diameters supported: 140 mm
Rear fans installed: 1x 120 mm
Number of rear fans supported (max): 1
Rear fans diameters supported: 120 mm
Number of top fans supported (max): 2
Top fans diameters supported: 120 mm
Liquid cooling capability: Yes
Front radiator sizes supported: 120,140,240,280 mm
Rear radiator sizes supported: 120 mm
Top radiator sizes supported: 120,140,240 mm
Pulse-width modulation (PWM) support: Yes

Storage

Supported HDD sizes: 2.5,3.5"
HDD/SSD combo cage: Yes

Weight & dimensions

Width: 210 mm
Depth: 360 mm
Height: 440 mm
Weight: 4.28 kg
Material thickness: 0.5 mm

Check the manufacturer's page before buying.

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PC Gaming GA300 Grid Line vs similar cabinets

	CoolBox PC Gaming GA300 Grid Line	CoolBox PC Gaming GA450 Star Light	CoolBox PC ATX A850	CoolBox GE2000 DualView
Form factor	Tower	Tower	Tower	Tower
Motherboard support	ATX / mATX / ITX	ATX / mATX / ITX	ATX / mATX / ITX	ATX / mATX / ITX
GPU clearance	340 mm	340 mm	330 mm	395 mm
Released	2025	2025	2025	2025