The LANCOOL III is Lian Li’s high-airflow E-ATX-capable case. It ships with three 140 mm fans at the front and one at the rear, takes radiators up to 420 mm at the front and top and graphics cards up to 435 mm. Both sides are hinged tempered glass. In KitGuru’s test cooling was very good, and noise rose at high fan speeds.
LANCOOL 3-X: black version with four 140 mm PWM fans. The white LANCOOL 3-W and the ARGB-fan 3R-X and 3R-W are colour and fan options of the same case; the LANCOOL 207 and 216 are separate cases.

| Specification | Value |
|---|---|
| Dimensions | 526 × 238 × 523 mm (D × W × H) |
| Motherboard and power supply | E-ATX (under 280 mm wide), ATX, Micro-ATX, Mini-ITX; ATX power supply up to 220 mm |
| Materials | 0.8 mm SGCC steel; 4 mm tempered glass on both sides; aluminium door handles |
| Included fans | 3 × 140 mm PWM at the front, 1 × 140 mm PWM at the rear; 200–1800 rpm, 83.5 CFM, 33 dB(A) |
| Fan support | Front 3 × 120/140 mm, top 3 × 120/140 mm, rear 1 × 120/140 mm, above the PSU shroud 3 × 120 mm |
| Radiator support | Front 360/420 mm, top 360/420 mm, above the PSU shroud 360 mm |
| Component clearances | Graphics card up to 435 mm; CPU cooler up to 187 mm |
| Storage | 2 + 3 + 3 × 2.5-inch bays and a 4 × 3.5/2.5-inch drive cage |
| Expansion slots | 8 |
| Front I/O | Power, reset, 2 × USB 3.0, 1 × USB Type-C, audio |
| Dust filter and warranty | 1 bottom dust filter; 1-year warranty |
Lian Li presents the LANCOOL III with hinged glass panels, magnetic cable cover doors and an airflow-optimised mesh structure. Lian Li
KitGuru tested the case in hot weather with a Ryzen 9 5900X and a Radeon RX 6800 XT; cooling with the four included 140 mm fans was very good. Because the fans are clearly audible at high speed, running them at about 1000 rpm was recommended. The small screws on the SSD covers were criticised as a detail that makes assembly harder.
KitGuru: Lian Li Lancool III review