Compact 21.3 L volume with support for both horizontal and vertical installation. Supports the installation of 4-slot graphics cards up to 358 mm long with an integrated GPU holder and liquid cooling radiators up to 360 mm.

Liquid cooling radiators up to 360 mm are supported only with an SFX power supply; with an ATX PSU, the maximum is 240 mm. In vertical mode, clearance for video cables is limited to 52 mm.

All specifications

Specifications B4 Mesh Black

Colour

Features	gaming
Form factor	Mini Tower
Mount	horizontal and vertical
Motherboard support	micro-ATX
Board placement	vertical
PSU form factor	ATX (regular)


Computer case
Dimensions (HxWxD)	288x191x420 mm
PSU max lenght	140 mm
Graphics card max lenght	358 mm
Fan max height	165 mm
Material	steel
Rubber feet
Side panel	removable


Storage
PSU
PSU mount	top
3.5" bays	1
internal 2.5" compartments	2
Expansion slots	4
Screwless


Cooling
Installed fans	2 шт 120mm (15mm slim)
Fans (back)	1x120mm
Fans (front)	1x120mm
Fans (side)	2x140mm / 3x120mm /
Fans (top)	2x120mm
Fans (bottom)	2x140mm / 3x120mm /
Fan mounts total	10
Dust filter	bottom
Liquid cooling system support

Liquid cooling system
Liquid cooling (side)	360mm
Liquid cooling mounts	1


Connectors and functions
Placement	on top of the case
USB-A 5Gbps	2 pcs
USB-C 20Gbps	1 pcs
Audio (microphone/headphones)


More features
Front panel	lattice
Side panel window	metal grid
More features	graphics card holder hidden wiring CPU cooling mount window
Official Website	lian-li.com
Added to E-Catalog	September 2026

E-Catalog UK editor, Computer Cases

Valerii Lenko, edited 09.09.2026

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.

Price for Lian Li B4 Mesh
	Lian Li B4 Mesh black		from £59.90	1 offer
	Lian Li B4 Mesh white		from £64.90	2 offers

Lian Li B4 Mesh black

Lian Li Lian Li B4 mATX Mesh Black G99.B4X.00

Lian Li B4 Mesh configurations