Is anything not checked?

Lian Li doesn't publish a thickness limit for the Lancool 216, so that isn't checked.

Where do these numbers come from?

Lian Li's published spec; card size from NVIDIA's spec page. Checked October 2026. Makers measure differently and connectors add a few millimetres, so treat a tight result as a reason to measure.

Every card in the Lancool 216

Will it fit

Does the NVIDIA GeForce RTX 5090 Founders Edition fit in the Lian Li Lancool 216?

Fits

Yes. The NVIDIA GeForce RTX 5090 Founders Edition fits the Lian Li Lancool 216 with 88 mm of length to spare.

Length304 of 392 mm88 mm spare

Height137 of 180 mm43 mm spare

Thickness2 slotsNot published

Exact measurements

Size	NVIDIA	Lancool 216	Room
Length	304 mm	392 mm	88 mm spare
Height	137 mm	180 mm	43 mm spare
Thickness	2 slots	—	Not published

Lian Li's published spec

Questions

Does the NVIDIA GeForce RTX 5090 Founders Edition fit in the Lian Li Lancool 216?: Yes. The NVIDIA GeForce RTX 5090 Founders Edition fits the Lian Li Lancool 216 with 88 mm of length to spare. Length 304 of 392 mm, height 137 of 180 mm, thickness 2 slots (no published limit).
Is anything not checked?: Lian Li doesn't publish a thickness limit for the Lancool 216, so that isn't checked.
Where do these numbers come from?: Lian Li's published spec; card size from NVIDIA's spec page. Checked October 2026. Makers measure differently and connectors add a few millimetres, so treat a tight result as a reason to measure.

Sources

Case: Lian Li’s Lancool 216 specifications, checked October 24, 2026. Lian Li lists cards up to 392 mm long and 180 mm tall (air-cooling mode); no thickness limit.
Card: NVIDIA’s spec page, checked October 23, 2026. NVIDIA publishes the slot count, not a thickness in millimetres, and asks for room for a 3-slot (61 mm) card for airflow.

This card in other mid-towers

The card’s size, and all 25 cases

Other RTX 5090 cards in the Lancool 216

Check another pair with the fit checker.

Based on published dimensions, not a guarantee. Check cable, cooler and connector clearance before you buy.