Is this 3D model free to download?

Yes, Prusa i3 Fan Duct 40mm GEEETECH Pro B is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" 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 Trollendrop, published on Thingiverse. 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.

Prusa i3 Fan Duct 40mm GEEETECH Pro B 3D printable model by Trollendrop

Prusa i3 Fan Duct 40mm GEEETECH Pro B photo 1

Prusa i3 Fan Duct 40mm GEEETECH Pro B photo 2

Prusa i3 Fan Duct 40mm GEEETECH Pro B photo 3

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Prusa i3 Fan Duct 40mm GEEETECH Pro B

Source: Thingiverse by Trollendrop

The Prusa i3 Fan Duct 40mm GEEETECH Pro B is a free printable 3D model from Thingiverse by Trollendrop. !ATTENTION! I have redesigned this fan duct, it uses a more efficient design, I would recommend using the improved design. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

118 saves Source: Thingiverse Updated 2026-10-15 License: CC-BY · commercial OK 1 makes Category: 3D Printer

Tags: 40mm, 40mm fan mount, CookPiggy, cooling fan, duct, fan, fan duct, geeetech, geeetech i3b acryli, geeetech i3 pro b, Geetech, Geetech I3 pro B, mount, Pro B, prusa i3

About this model

!ATTENTION! I have redesigned this fan duct, it uses a more efficient design, I would recommend using the improved design. I've been searching alot for some good fan ducts for my printer, but none of them really fit, or were to my liking. So I decided to create my own, which was perfect! It is designed for the type of printer with that metal mounting carriage under the extruder with 2 holes 24mm apart of eachother The air distribution was better than I ever expected, it is exactly how I wanted it to be. It is designed with 0.3mm tolerances There are two fan ducts, one with the round holes for the nuts and one with the geometric holes for the nuts, I designed the one with the round holes first, but then I realized it was really dumb because the nuts would just twist freely

Frequently asked questions

Is this 3D model free to download?: Yes. Prusa i3 Fan Duct 40mm GEEETECH Pro B is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by Trollendrop.
Who made this model?: Designed by Trollendrop, published on Thingiverse. 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.