I made this lid from scratch after printing the original model. The sealing now fits the Vtopmart 4l box (and most likely all Amazon clones) very well (diameter is 60.5mm). I also added a stop for the PTFE tube as mine got slowly sucked into the drybox during printing, which is less than ideal.

The threat on the couple is a M10x0.75 which fits the PC10 coupler perfectly.

The hygrometer has a diameter of 41mm

Printing:

• No support needed
• Nothing special, just use your favorite slicer settings