A remix of the awesome Parametric Rugged Box by Whitty, but in a narrow configuration with only a single latch/hinge. This was originally intended to create my own custom boxes that perfectly fix the MTM Ammo Box Mini Crate. The STL's are sized for exactly that purpose, but the Fusion file remains fully parametric so you can make any size you need for other purposes.
Update:
V2 files have added a flat handle, removable tray, and recesses for stack-able feet. I didn't model the feet themselves, but a simple rectangle printed from TPU and glued on works great. This will provide indexing points for stacking multiple boxes.
The author remixed this model.
Removed one of the hinges/latches to allow efficient narrow orientation for use with common ammo box crates. Also added a removable tray, flat top handle, and feet recesses.