Is this 3D model free to download?

Yes, 3" Duct Adapter for 120mm Fan is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MakerWorld. Use the "Download from MakerWorld" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by Ocular Dynamic, published on MakerWorld. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

3" Duct Adapter for 120mm Fan 3D printable model by Ocular Dynamic

3" Duct Adapter for 120mm Fan

Source: MakerWorld by Ocular Dynamic

The 3" Duct Adapter for 120mm Fan is a free printable 3D model from MakerWorld by Ocular Dynamic. Print profile is for the 120mm funnel adapter with the optional cap. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MakerWorld

395 saves Source: MakerWorld Updated 2026-10-14 Print time: 1h 49m Filament: 71 g License: CC-BY-NC-SA · non-commercial ★ 4.8 (20) 200 makes Category: 3D Printer

Tags: 120mm, 3inch, 3inchduct, adapter, duct, exhaust, fan, fanduct, fanflange, flange

About this model

Print profile is for the 120mm funnel adapter with the optional cap. Update - Added two versions of a 3in angled adapter that I needed for a specific project. One is 120mm to 3in flange similar to the funnel adapter and the other one with the “_small” suffix just has some of the material trimmed on the sides to save material if you aren't worried about mounting to something thats 120mm. The cap wont work on the angled adapters

Frequently asked questions

Is this 3D model free to download?: Yes. 3" Duct Adapter for 120mm Fan is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MakerWorld, not by Thinger. We link you directly to the original listing by Ocular Dynamic.
Who made this model?: Designed by Ocular Dynamic, published on MakerWorld. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.