Lian Li LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black

MX00123020 LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black
MX00123020 LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black MX00123020 LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black MX00123020 LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black MX00123020 LANCOOL III Mid-Tower ATX Case w/ Tempered Glass Side Panel - Black

Product Info


LANCOOL III, the premium mid-tower chassis, offers better thermal performance than LANCOOL II by including 4 pre-installed 140mm PWM fans, and featuring fine mesh panels designed to ensure ample airflow is delivered to the high-end components while the system runs at peak performance.

  • Mid-tower modular chassis for all kinds of configurations
  • Equipped with 4 × 140 PWM fans (ARGB or non-RGB)
  • Featured airflow optimized mesh structure and hinged side panels
  • Supports up to 420 radiator or 3 x 360 radiators and a maximum of 10 fans
  • Offers 12 storage drives mounting locations
  • Upgraded cable management solution for a clean build
  • Included 4 × 140mm PWM fan
  • Fully Mesh Design
  • Unprecedented Modularity
  • Optimize Cooling Support
  • Cable Management with Ease
  • Reversible FIO



AVAILABLE IN– TWO COLORS, TWO MODELS The LANCOOL III black features a premium hairline brushed aluminum element that looks as good as it feels, while the LANCOOL III white features a minimalist white powder coating. The tempered glass panel allows showing off the internal components.


A fine mesh design has been implemented at the front, top, and both bottom side panels of the

  • Top and 2x Bottom Side Panels
    The two bottom side panels provide sufficient airflow to efficiently cool the GPU when fans are installed above the PSU shroud
  • Front Panel
    The 51% porosity offers an ample direct fresh air intake


The hinged tempered glass side panels offer an unobstructed view of the interior configuration, while the bottom shroud panels provide quick access to the PSU and storage drives.

  • The two removable 4mm tempered glass panels located on each side of the case can be opened by pulling the front aluminum handle
  • The mesh panels located on both sides of the PSU shroud area can be removed for cleaning when the front panel is unattached.


With ample interior room, the LANCOOL III can offer different cooling and usage scenarios

AIR Cooling

With high airflow stock fans, and air tower clearance up to 185mm, the LANCOOL III is ideal for an air-cooling build.

AIO Cooling

With ample front intake, the LANCOOL III can provide strong performance for an AIO cooling build. The top fan bracket can support up to 3 x 120mm/140mm fans and offers enough thickness clearance for an AIO with a 420 radiator/fan combo.

Custom Water Cooling

With the ability to support 3 × 360mm radiators simultaneously, the LANCOOL III can offer custom water-cooling enthusiasts, lots of imagination.


The LANCOOL III is optimized for water-cooling and high-end thermal solutions. A maximum of 10 × 120mm fans or a large 420mm radiator can be mounted in the main chamber.

Multi-way Front Fan/Radiator Bracket

The multi-way front fan bracket offers 4 different ways to mount a radiator or fans to cater to different cooling needs, and features a new latch/handle mechanism to easily secure it in place without the need of the locking thumbscrews.

Removable Top Fan Bracket

Removable Top Fan Bracket The removable top fan bracket with offset fan mounting points allows for a thicker fan and radiator combo to be installed at the top of the LANCOOL III by providing enough clearance from the ram.

Modular PSU Shroud Bracket – Fan/ Pump/ SSD

The adjustable modular PSU shroud bracket can accommodate 1 x 360mm radiator, 3 x 120mm fans, 3 x 2.5" SSDs, or a pump/reservoir combos.

Side Multi-Purpose Mounting Slots

Mounting slots beside the motherboard are provided at 105mm apart (standard 120mm fan mounting points) to allow the installation of a distro plate or a reservoir/pump bracket.


Multiple storage drive mounting locations are supported for up to 12 x 2.5" SSDs or 4 x 3.5" HDDs and 8 x 2.5" SSDs.

  • Adjustable Drive Cage
    2 adjustable drive cages (each for 2 x 3.5" HDDs or 2 x 2.5" SSDs) can be individually removed or adjusted.
  • Toolless SSD tray
    Two spring-loaded SDD trays located behind the motherboard tray allow for a toolless installation of the drives.
  • Side SSD tray
    The side-mounted SSD trays located inside the right PSU shroud panel can support up to 3 x 2.5" SSDs or can be removed to improve airflow.


As the second chamber located on the right side is visible, great consideration has been given to cable management. The LANCOOL III features an upgraded solution to ensure neat cable routing with toolless magnetic cable cover doors, and a well-organized layout for hubs and cables.

  • 3 Layers Velcro Straps
    Holds 3 different sets of cables separately
  • Routing Velcro Straps
    Provides a clear path for cables such as the CPU 8pin, fan cables, USB cables…
  • Layout for Fan Hubs
    3 fan controllers/ fan hub mounting locations are provided between the large Velcro straps, with an additional one at the removable plate behind the motherboard
  • Hinged Cover Doors
    Magnetic, hinged, and removable cable cover doors hide cable clusters and provide easy access at the same time

Sliding Cable Routing Cover

By slightly loosening the two back thumb screws, the cable cover can be adjusted to fit different sizes of motherboards.


Optimized for PC locate on a desk, the front I/O can be relocated to the bottom of the chassis.


The removable PSU mounting bracket allows for PSU installation outside of the chassis, to then slide it in through from the rear.


A GPU anti-sag bracket is included for a seamless display of the hardware through the side tempered glass panels.


O11DE-1X/1W - The O11D EVO Vertical GPU kit is compatible with LANCOOL III, offering adjustable clearance beneath the vertical GPU by installing it in different expansion slots.

LAN3-1X/1W - A front, top and left side magnetic dust filter is offered to provide a higher level of dust filtration. Please note that the airflow will be impacted by the dust filters.

Additional Information:

Visit the Manufacturer Product Web Page for Full Details


Make and Model LIAN LI LANCOOL III Mid Tower Case
Color Black
Material Aluminum (Door handles)
0.8mm SGCC (exterior and interior)
4.0mm tempered glass (both sides)
Motherboard Compatibility E-ATX (width: under 280mm)/ATX/MICRO-ATX/MINI-ITX
Radiator Support Front: 360mm or 420mm
Top: 360mm or 420mm
Above PSU Chamber: 360mm
PSU Clearance ATX (Under 220mm)
GPU Length Clearance 435mm (Max)
CPU Height Clearance 187mm (Max)
Fan Support Front (multi-way fan/radiator bracket): 3 x 120mm or 3 x 140mm
Top: 3 x 120 or 3 x 140mm
Rear: 1 x 120mm or 140mm
Above PSU Chamber: 3 x 120mm
Fans Included Front: 3 x 140mm PWM fans
(200~1800 RPM / DC 12 V, 0.24A / 83.5 CFM / 2.3 mm H2O / 33dB-A)
Rear: 1x 140mm PWM fan
(200~1800 RPM / DC 12 V, 0.24A / 83.5 CFM / 2.3 mm H2O / 33dB-A)
Expansion Slot 8
IO Ports 1 x Power Button
1 x Reset Button
2 x USB 3.0
1 x USB Type C
1 x Audio
Dust Filter 1 x Bottom (Tray)
Dimensions (D) 526mm x (W) 238mm x (H) 523mm
Weight N/A

Package Contents

  • Lian Li Case
  • Accessories
  • User Manual