120 mm axial fan — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/120mm-fan/  (CC BY 4.0)
Basis: industry standard frame
Catalog version: 2026-10-20

Overall (mm): length 120, width 120, height 25
Mounting holes: 4 × Ø4.3 mm, pattern 105 x 105, screw M4 or fan screw
- Frame 120 × 120 mm; four holes on a 105 × 105 mm pattern, Ø4.3 mm; 25 mm thick is standard, 15 mm slim exists.
- 140 mm fans use a 124.5 × 124.5 mm pattern; 80 mm use 71.5 × 71.5; 92 mm use 82.5 × 82.5.

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Computer fan (dimensions table) — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Computer_fan

Xem Studio scan: not needed; this is a published standard. The sheet is the geometry.
API: https://xemstudio.com/api/geometry?object=120mm-fan