Vacuum and powercord plug 50mm

When you need to pass a powercord and a vacuumhose through a 28 mm thick wall. 

Powercords up to 6.5 mm diameter

vacuumhose 35 - 36 mm (standard EU hose, Kärcher)

hole in the wall = 50 mm

0,3 layerhights is just fine. Draft preset in prusaslicer