Edited the OnShape file to have the cables exit the right, left, and rear of the enclosure which works better for my applications. The Rear exit has the holes sealed up solid.

Print instructions

Rafts: No

Supports: No

Resolution: .20

Infill: 20%

Filament: Inland ABS Black
Notes:

You can print with any filament, I chose ABS for my application.
The enclosure will be near water.