Keep your filament clean, dry and ready to use with MultiMaterial Unit!

Spool tank with MMU integration kit for PrusaBox

Spool tank is an enclosure kit that allows you to keep your filament spool protected from dust, from humidity and ready to use.


This article is designed for you if you want to place the Spool Tank on top of the PrusaBox for using the Prusa Multi Material Unit.


We advise to use printed springs (available here in option, or in download section) to autorewind the spools while using MMU, instead of a buffer.


Kit includes all metal parts in black (top, bottom, backplate, two sides), plexiglass doors for MMU and Spool Tank, MMU motor’s cable extenders, stainless steel screws and nuts, two threaded rods, 24 bearings and 1 meter of PTFE tube 3.2*4.8mm (more information).


Printed parts are optional here, or there are ready to print STL files are available in download section. It’s designed in order to be easily printed without support.

Assembly guides are available here.


Our kits are manufactured in France in a top level factory.

Feel free to contact us if you have any questions !

253,20 338,40  VAT included

Auto-rewind system

  • Using printed springs, manage your filament when working with the MMU! No additional buffer needed, only printed parts

Broad compatibility

This kit is compatible with:


  • PrusaBox enclosure
    • PrusaBox MK3
    • PrusaBox MK4
  • MMU system


    • MMU2
    • MMU3 for MK3 and MK4

Easy access

  • The two top PrusaBox doors remains removable to let you access to your printer
  • Entirely openable large front door for the Spool Tank

Why use a Spool tank ?

Protect from humidity

Enclosure for filament allows you to control humidity exposure and depending your humidity environnement applied appropriate solutions.

Protect filament from dust

Protecting filament from dust reduces dust on the extruder that can generate printing issues.

Ready to use

With large spool capacity spool tank allows you to get your filament ready to use.

Spool tank benefits

Moisture proof

Non moisture material structure!
Spool tank is made of stainless steel (no wood).

Tank! it is really a tank!

Frame is made of high quality stainless steel and PMMA translucent door.

Self drying with printer enclosure!

Air going out of the printer enclosure is injected into the spool tank to keep filament dry.
Ready to print mod for Prusabox user.

Combined with Prusabox

Spool tank + Prusabox = the ideal combinaison for Prusa users!

Wall mount

Ready to mount on a wall!

On a shelf set-up

Install it easily on the shelf on your office / room.

CNC manufacturing

We use top quality equipment: Laser cutting machine, CNC bending.

Ready to print STL plate

All printable file are easy to print.
Available in download section

Proudly made in France

Everything is designed and made to high industry standards in our factory in France.

Messenger/email support

By Facebook Messenger or Email we support all requests questions.

Contact page

Great community

Printer Box community has more than 800 members on Facebook group.

More detail

Online manual

Online documentation.
Discover the documentation

Mods & options

All mods & options are available for free on the Enclosure mods & options page. Some mods require additional components which are listed on each mod page.

Printed parts

Printed parts are not included in our kit, there are available as an option.

Humidity control kit

With dehumidifier Hydrosorbent and hygrometer, control humidity and fight moisture on your filament.
Kit includes:

  • Dehumidifier Hydrosorbent (1pc)
  • Digital thermometer and hygrometer (1pc)
  • Printed parts (2pcs)

Sealing kit option

Sealing is required for tropical country with high humidity level.
Sealing kit includes :

  • Adhesive foam
  • Adhesive aluminium. See more here



Spool tank outside dimensions :

  • Width: 452mm (17.7inch)
  • Depth: 270mm (10.7inch) without doors and front hinge
  • Height: 300mm (11.8inch) with door closed

Our kit includes

  • All metal frame parts with industrial black coating (5pcs) : bottom + top + left side + right side + back panel
  • Spool Tank front door and PrusaBox top doors made of transparent PMMA (1pcs)
  • Required stainless steel screws, nuts and pins for assembly
  • Threaded rods and bearings for spool mounting
  • 1 meter PTFE tube 3.2*4.8mm
  • You have unlimited access to STL files, assembly guide and support from our team.

The kit does NOT include printed parts. All easy to print files are available in download section.

Get your kit now!
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253,20 338,40  VAT included


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