120mm To 140mm Flat Fan Adapter – 3D Printed Custom PC Mounting Mod (Multicolor)

Building a custom PC and ran into a fan size mismatch?

No worries—this little adapter’s got you covered.

It’s a flat mounting mod that lets you fit a 140mm fan into a 120mm slot, or vice versa, depending on what you need.

Made right here in the USA from PLA and PLA+, it’s a sturdy little bracket that gets the job done.

It’s brand new, never used, and comes in a fun multicolor design.

No complicated wiring or extra tools needed—just mount it and go.

The fan diameter is 120mm, but the adapter makes it universal for most case setups.

Whether you’re upgrading cooling or just tinkering, this is a cheap and easy fix.

No voltage, no airflow specs to worry about—it’s purely mechanical.