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Mistral 41 Accessories Kit — Vertical Coupler + Drywall Brackets — image 1
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Mistral 41 Accessories Kit — Vertical Coupler + Drywall Brackets

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Three useful parts for Mistral 41 electrical boxes: stack them vertically or mount to drywall.

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Three things I designed because buying original accessories was either impossible or stupid expensive in my city. All fit Mistral 41 boxes specifically.


Vertical coupler Stack two boxes on top of each other. Snug fit so they don't wobble. Tight tolerances — if your printer runs loose, scale up 1-2% or sand slightly. Test fit first.


Drywall bracket kit Nut holder + folding bracket for mounting to gypsum board. Couldn't find proper hardware locally, shipping was ridiculous, so I made my own.

How it works: Nut holder traps the nut inside the box. Bracket ears fold down, go through the hole, spring back behind the board. Tighten M3 screw from front, bracket pulls everything tight.

Hardware needed: M3 screws (I used 50mm, but measure your drywall thickness + box depth) and M3 hex nuts.


Print settings for all parts

  • Material: PETG only — needs strength and flex. PLA will crack.

  • Layer height: 0.2mm (your choice, this worked for me)

  • Infill: 30-100% depending on part


Important: These are designed for tight fit. Calibrated printer recommended. Not affiliated with or endorsed by the manufacturer.

Sorry for the photos — these are the only ones I could find.

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