There are a lot of deckbox models out there, but none of them were exactly what I was looking for. I wanted something rugged with a friction fit lid that wouldn't come open if dropped or tumbled around in a bag. I also wanted a box that was also easy to use and get a deck in and out of. This is what I came up with.

Outside dimensions: 

79mm W x 89mm L X 105MM H

Inside dimensions:

68mm W x 77mm L x 100mm H

Please note:

The lid is a friction fit. IT WILL BE TIGHT. Depending on your filament and your nozzle, you may have to sand/file the outside edges of the raised inner lip of the box to get it to open and close without it being a struggle. I designed it to be tuned after printing in this way so you can get a perfect fit for your use. Runs great in PLA and PETG. I've used 0.4 and 0.6 nozzles in an AD5M slicing with Orca successfully many times.