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LIAN LI B4-mATX Mesh Cases Compact 21.3L SFF Gaming Case, 358mm 4-Slot GPU & 360mm Radiator Support, 140mm ATX PSU, White | G99.B4W.00
Lian Li

LIAN LI B4-mATX Mesh Cases Compact 21.3L SFF Gaming Case, 358mm 4-Slot GPU & 360mm Radiator Support, 140mm ATX PSU, White | G99.B4W.00

SKU: 59933
AED329.00
In stock
  • Delivery by Tomorrow, Sat, Oct 03
  • Cash on delivery or bank transfer
  • 1 year warranty
  • Free returns
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Recommended Liquid Cooling Configuration

The B4-mATX supports 360mm and 280mm radiators with up to 52mm total thickness.

360 / 280mm AIO Setup

■ SFX PSU + M-ATX motherboard
■ 3 x Bottom fans
■ 2 x Top slim fans (pre-installed)

240mm AIO Setup

■ 140mm ATX PSU + M-ATX motherboard
■ 3 x Bottom fans
■ 2 x Top slim fans (pre-installed)
■ 1 x Rear fan

Note: Due to internal space limitations, fans must be installed outwards when using liquid cooling.

240mm AIO Installation Setup:

■ SFX PSU + M-ATX motherboard
■ Bottom fans ×3
■ Front fan ×1
■ Rear fan ×1
■ Top slim fans ×2 (pre-installed)

280mm AIO Installation Setup:

■ SFX PSU + M-ATX motherboard
■ Bottom fans ×3
■ Rear fan ×1 / Front fan ×1
■ Top slim fans ×2 (pre-installed)

Note: Due to internal space limitations, fans need to be installed outside the chassis when installing an AIO liquid cooler.

Recommended Air Cooling Configuration

159mm Air Cooler Setup

■ SFX PSU + M-ATX motherboard
■ 3 x Bottom fans
■ 1 x Side fan
■ 1 x Rear fan
■ 1 x Front slim fan
■ 2 x Top slim fans
(pre-installed; front fan flipped to intake)

165mm Air Cooler Setup

■ 140mm ATX PSU + M-ATX motherboard
■ 3 x Bottom fans
■ 1 x Rear fan
■ 2 × Top slim fans
(pre-installed; front fan flipped to intake)

Note: Although the Noctua NH-D15 G2 is officially listed at 168 mm tall, its actual installed height is 165 mm. Additionally, the fans can be mounted 3 mm lower, ensuring compatibility.

Flexible Cooling Configuration

Top: 2 × 120mm slim fans (pre-installed)
Side: 3 × 120mm fans / 2 × 140mm fans or 360mm / 280mm / 240mm radiator
Rear: 1 × 120mm fan
Bottom: 3 × 120mm fans / 2 × 140mm fans
Front: 1 × 120mm slim fan

(Note: The front slim fan is not supported with 360mm radiator or ATX PSU installation.)

Note: To install three 120mm fans, the PCIe accessory below the PCIe slots must be removed.

Note: When installing 140mm fans at the bottom, clearance with the bottom connectors of some mATX motherboards may be limited.

Extra Intake, Better Cooling

Supports a 120 × 120 × 15mm slim front fan with an SFX PSU and GPU under 343mm long, helping improve intake airflow.

PRE-INSTALLED 15MM SLIM FANS,

Flexible Airflow Design

Two pre-installed 120 × 120 × 15mm slim fans on the top provide enhanced cooling performance. Operating up to 1800 RPM, they are daisy-chained to reduce cable clutter.

BrandLian Li
SKU59933
Warranty1 year
Form factorMicro-ATX
Length3 Fans
Supported cooler sizes120mm,240mm,360mm

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AED329.00